Full breastfeeding duration and associated decrease in respiratory tract infection in US children

Association of breastfeeding practices during the first 12 months and subsequent infant respiratory tract infections: a prospective cohort study

BACKGROUND

Breastfeeding and human milk are the normative standards for infant feeding and nutrition.

OBJECTIVES

We aimed to examine the association of breastfeeding practices during the first year of life with subsequent infant respiratory tract infections (RTIs).

METHODS

The study was a secondary analysis embedded in the Tongji Maternal and Child Health Cohort study. Information on infant breastfeeding was collected at 3, 6, and 12 months of age. Pediatrician-diagnosed infant RTIs and hospitalization for RTIs during 12-24 months were obtained at 24 months postpartum. Robust log-Poisson regression models were applied to explore the association of breastfeeding practices with RTIs risk and hospitalization due to RTIs.

RESULTS

Among the 5242 infants studied, 13.1% (n = 435) of infants received full breastfeeding for six months and continued breastfeeding for at least one year (F6-L). When compared with infants in the F6-L group, those who were formula fed (FF) had a higher risk of RTIs, including upper RTIS and lower RTIS, the adjusted RRs (95%CIs) were 1.34 (1.17, 1.53), 1.31 (1.12, 1.52), 1.59 (1.10, 2.31), respectively. When compared with infants in the F6-L group, the adjusted RRs (95%CIs) for hospitalization from RTIs was 1.88 (1.20, 2.95) for the FF group.

CONCLUSION

Full breastfeeding for six months and continued breastfeeding for at least one year was associated with a lower risk of subsequent infant RTIs and hospitalization from RTIs.

The Impact of Social Factors on the Benefits of Breastfeeding

INTRODUCTION

Although breastfeeding can protect against a variety of childhood illnesses, rates of breastfeeding are low across the USA and are lowest among ethnic minorities. Here, we aimed to explore the relationships between race, socioeconomic status (SES), and the impacts of breastfeeding on common childhood illnesses.

METHODS

Subjects were recruited from a university-affiliated health system in Southwest Michigan. Data were recorded regarding feeding methods, demographics, and sick visits correlating with five childhood disease states. Insurance status was used as a proxy indicator of SES.

RESULTS

In the overall population, more breastfeeding was associated with a reduced incidence of respiratory illnesses (IRR 0.9991, p = 0.0003) and increased incidence of eczema (IRR 1.0009, p = 0.0297). In white patients, breastfeeding was associated with fewer total diseases (p = 0.004) and respiratory infections (p = 0.0045), while in Black and Hispanic patients, breastfeeding was associated with increased eczema (p = 0.0053 and p < 0.0001, respectively). High-SES white patients had significantly reduced total illnesses (p < 0.0001), ear infections (p = 0.0003), eczema (p < 0.0001), and gastrointestinal illnesses (p = 0.0025). High-SES Black and Hispanic patients had no significant associations with breastfeeding days.

CONCLUSIONS

Breastfeeding appeared protective against total illnesses in high-SES, white populations. Infants of color, regardless of SES, experienced no significant protection. We suggest that the benefits of breastfeeding may not compensate for the detrimental health effects of social inequities. Future breastfeeding research should consider the interactions between social factors and the known health benefits of breastfeeding.

Asthma identified as a major risk factor for recurrent respiratory tract infections in children: a meta-analysis of 29 studies

BACKGROUND

Recurrent respiratory tract infections (RRTIs) in children represent a significant clinical challenge. Although some studies have identified potential risk factors, a comprehensive and systematic overview is lacking.

OBJECTIVE

This analysis is carried out to provide more advanced evidence to guide future prevention and health care.

METHODS

This study (PROSPERO: CRD42024576464) was conducted in accordance with PRISMA guidelines. PubMed, Embase, Web of Science, and the Cochrane Library were searched for relevant studies published in English. Subgroup analysis, sensitivity analysis, and publication bias assessments were performed. Data analysis was conducted using Stata 17, and GRADE was employed to assess the quality of evidence. The risk factors identified in the positive results were discussed qualitatively.

RESULTS

A total of 29 studies covering 639,078 children were included. Some risk factors: asthma (OR = 3.08, 2.06-4.62), breastfeeding <6 months (OR = 1.26, 1.04-1.52), DCC: day care center (OR = 1.50, 1.16-1.93), have siblings (OR = 1.26, 1.00-1.59), ETS: Environmental tobacco smoke (OR = 1.13, 1.00-1.27), snoring (OR = 1.49, 1.16-1.93) got positive result.

CONCLUSION

This analysis identifies several key risk factors for RRTIs in children, providing enhanced evidence for prevention and management strategies. In particular, asthma warrants closer attention, given its strong association with respiratory infections in pediatrics.

Availability of Lactation Policies and Facilities for ACGME-Accredited Surgical Residency Training Programs

OBJECTIVE

We aimed to investigate availability of lactation policy and facility information among surgical residency programs accredited by the Accreditation Council for Graduate Medical Education (ACGME).

DESIGN

Between March 1, 2023 and October 31, 2023, websites of surgical residency training programs on the ACGME Accreditation System List of Programs by Specialty were reviewed for department lactation policies, links to institutional graduate medical education (GME) websites with lactation policies, lists of lactation facilities, and links to institutional GME websites listing lactation facilities. Scatter plots were generated and Pearson correlation coefficients were calculated to assess relationships of the percentages of female residents, fellows, and faculty in each surgical specialty with the percentage of residency program websites with available lactation information.

RESULTS

In total, 1847 websites were reviewed. Seventeen (0.9%) had lactation policies, 31 (1.7%) had lists of lactation facilities, 231 (12.5%) had links to institutional websites with lactation policies, and 295 (16.%) had links to institutional websites with lists of lactation facilities. The percentage of female residents and fellows and percentage of female faculty were positively correlated with the percentage of residency program websites with available lactation information.

CONCLUSION

Limited information on lactation policies and facilities is available to surgical residents.

Creating a national breastfeeding and lactation policy for Canadian surgical residents

Background

Despite known benefits of breastfeeding and challenges medical trainees face lactating at work, research specific to Canadian surgical trainees is lacking. Our objectives were to examine existing breastfeeding and lactation policies, query experiences and opinions of surgical trainees and program directors, and propose a comprehensive policy for programs nation-wide.

Methods

A multi-disciplinary team developed this two-part study. The scoping review used database and grey literature searches to find North American policies covering surgical residents. The survey study queried lactating Canadian surgical trainees and program directors about experiences and barriers, support provided, and interest in a breastfeeding and lactation policy.

Results

Ten policies were found. None comprehensively addressed lactation space and supplies, break times, supports, and resident responsibilities. Among ten PD survey respondents: 60% were female, 70% had lactating trainees during their tenure, 40% discussed lactation accommodations, and all were willing to instate a policy. Among 24 trainees: 45% met breastfeeding goals, 74% stopped breastfeeding prematurely due to work barriers, and 88% had little workplace support. Almost all trainees (96%) wanted a policy.

Conclusion

There is opportunity and appetite for a more comprehensive breastfeeding and lactation policy for Canadian surgical residents. Our policy highlights important areas where trainees can be better supported to meet breastfeeding goals.

Contexte

Malgré les avantages bien établis de l'allaitement et les difficultés auxquelles les apprenants en médecine sont confrontés pour allaiter sur leur lieu de travail, il n'existe aucune recherche spécifique qui concerne les apprenants en chirurgie au Canada. Nos objectifs étaient d'examiner les politiques existantes en matière d'allaitement et de lactation, d'interroger les expériences et opinions des apprenants en chirurgie et des directeurs de programmes, et de proposer une politique globale à l'échelle nationale.

Méthodes

Une équipe multidisciplinaire a développé cette étude qui comporte deux parties. L'examen de la portée s'est réalisée à l'aide des bases de données et de la littérature grise pour identifier les politiques nord-américaines relatives aux résidents en chirurgie. L'étude par sondage a permis de recueillir les expériences des apprenants en chirurgie canadiens qui allaitent, ainsi que les avis des directeurs de programmes sur les obstacles rencontrés, le soutien fourni et l'intérêt pour une politique d'allaitement et de lactation.

Résultats

Dix politiques ont été identifiées. Aucune ne couvrait de manière exhaustive les aspects relatifs à l'espace et aux fournitures d'allaitement, aux temps de pause, aux soutiens, et aux responsabilités des résidents. Parmi les dix directeurs de programmes ayant répondu au sondage : 60 % étaient des femmes, 70 % avaient encadré des résidents allaitant, 40 % avaient abordé la question des aménagements pour l'allaitement, et tous étaient favorables à l'instauration d'une politique. Parmi les 24 résidents interrogés : 45 % ont atteint leurs objectifs d'allaitement, 74 % ont cessé d'allaiter prématurément en raison d'obstacles professionnels, et 88 % ont signalé un faible soutien sur leur lieu de travail. Presque tous les résidents (96 %) étaient favorables à l'élaboration d'une politique.

Conclusion

Il existe une opportunité et un besoin pour une politique plus complète en matière d'allaitement et de lactation pour les résidents en chirurgie au Canada. Notre politique met en lumière les domaines clés où les résidents pourraient être mieux soutenus pour atteindre leurs objectifs d'allaitement.

Comparing Group Versus Individual Prenatal Care on Breastfeeding Practice and Motivational Factors

OBJECTIVE

Although breastfeeding in the first 6 months postpartum benefits both infants and mothers, breastfeeding rates remain low. This study examined whether group prenatal care was associated with an increased breastfeeding initiation and duration compared with those receiving usual, individual prenatal care. A secondary aim was to investigate whether sociodemographic and motivational factors were associated with breastfeeding initiation and duration across prenatal care groups.

METHODS

Pregnant women in their third trimester ( n = 211) from an innercity university medical center participated. Prenatal care type was identified from the medical chart, and data on breastfeeding duration at 1, 3, and 6 months postpartum were collected. Breastfeeding motivational factors were assessed with a survey. Logistic regressions and independent-samples t tests were used for data analyses.

RESULTS

After controlling for demographic factors, group prenatal care was associated with increased breastfeeding at 6 months postpartum (odds ratio = 2.66; P = .045) compared with individual care. Breastfeeding intention ( P < .001), competence ( P = .003), and autonomous motivation ( P < .001) were significantly higher, while amotivation ( P = .034) was significantly lower in group compared with individual prenatal care.

CONCLUSIONS

Breastfeeding persistence was higher among women receiving group prenatal care, potentially due to motivational factors. Future studies should investigate how breastfeeding motivational factors could be effectively targeted in prenatal care to increase breastfeeding persistence.

Are There Benefits to Breastfeeding for Long Durations That Continue after Breastfeeding Has Stopped? An Analysis of Acute Respiratory Illness in Nigerian Children

Background: While an abundance of evidence exists regarding infectious outcomes in children as they relate to the short-term benefits of breastfeeding, there is limited evidence related to similar impacts beyond one year and after breastfeeding has stopped. Specifically, little is known about the long-term benefits of breastfeeding for acute health outcomes after infancy, particularly in Nigeria. Methods: The Nigeria Demographic and Health Survey data was used in this study. We utilized data (n = 5391) on children who had stopped breastfeeding for at least 12 months before the survey. Breastfeeding duration was categorized into 1-6 months, 7-12 months, 13-18 months, 18-24 months, and > 24 months. Any recent incident of acute respiratory illness in children was operationalized using the responses to related questions (recent incidents of fever, cough, running nose, and short, rapid, or difficulty breathing in children). Adjusted logistic regression was used to estimate odds ratios, and statistical significance was determined at p ≤ 0.05. Results: Post-infancy and after breastfeeding had stopped, the odds of recent acute respiratory illness were significantly less (AOR = 0.37, 95% CI [0.15-0.79], p = 0.04) in children breastfed for 19-24 months compared to those breastfed for 1-6 months. No significant association was found between the other durations and ARI post-infancy (p > 0.05). Conclusions: These findings indicate that breastfeeding for up to 24 months has a long-term protective effect from an acute health condition that contributes to the high under-five mortality rates recorded for decades in Nigeria specifically, and more broadly, in sub-Saharan Africa.

Maternal Ezetimibe Concentrations Measured in Breast Milk and Its Use in Breastfeeding Infant Exposure Predictions

BACKGROUND

Lactating mothers taking ezetimibe, an antihyperlipidemic agent, may be hesitant to breastfeed despite the known benefit of breastfeeding to both mother and infant. Currently, no data exist on the presence or concentration of ezetimibe and its main active metabolite, ezetimibe-glucuronide (EZE-glucuronide), in human breast milk.

METHODS

Voluntary breast milk samples containing ezetimibe and EZE-glucuronide were attained from lactating mothers taking ezetimibe as part of their treatment. An assay was developed and validated to measure ezetimibe and EZE-glucuronide concentrations in breast milk. A workflow that utilized a developed and evaluated pediatric physiologically based pharmacokinetic (PBPK) model, the measured concentrations in milk, and weight-normalized breast milk intake volumes was applied to predict infant exposures and determine the upper area under the curve ratio (UAR).

RESULTS

Fifteen breast milk samples from two maternal-infant pairs were collected. The developed liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay showed an analytical range of 0.039-5.0 ng/mL and 0.39-50.0 ng/mL for ezetimibe and EZE-glucuronide, respectively. The measured concentrations in the breast milk samples were 0.17-1.02 ng/mL and 0.42-2.65 ng/mL of ezetimibe and EZE-glucuronide, respectively. The evaluated pediatric PBPK model demonstrated minimal exposure overlap in adult therapeutic dose and breastfed infant simulated area under the concentration-time curve from time zero to 24 h (AUC24). Calculated UAR across infant age groups ranged from 0.0015 to 0.0026.

CONCLUSIONS

PBPK model-predicted ezetimibe and EZE-glucuronide exposures and UAR suggest that breastfeeding infants would receive non-therapeutic exposures. Future work should involve a 'mother-infant pair study' to ascertain breastfed infant plasma ezetimibe and EZE-glucuronide concentrations to confirm the findings of this work.

Effects of the COVID-19 Pandemic on Breastfeeding Initiation and Duration: A Retrospective Cohort Study

INTRODUCTION AND OBJECTIVES

Several studies support the health benefits of breastfeeding for both the mother and the newborn. However, a significant number of mothers discontinue breastfeeding within the first six months of childbirth, with several factors influencing breastfeeding adherence. The purpose of this study is to assess the impact of the COVID-19 pandemic on the prevention of mother-to-newborn infection transmission, breastfeeding patterns and duration, and the incidence of other infections during the first year of life.

METHODS

Data from a sample of 39 mothers who gave birth at the Hospital Pedro Hispano in Porto, Portugual, between March 2020 and November 2021 were collected and a telephone questionnaire was administered. Statistical analysis was conducted using R software, v. 4.2.1 (R Foundation for Statistical Computing, Vienna, Austria).

RESULTS AND DISCUSSION

In terms of the impact of the COVID-19 norm 18/2020, which went into effect on March 30th, our research found that the type of feeding during hospitalization was significantly influenced by this norm (X2=10.30, p=0.006). We also confirmed that mothers who received home assistance breastfed for an extra 4.5 months (95% CI: 1-7.5) compared with mothers who did not receive such assistance. Regarding the effect of COVID-19 and breastfeeding on newborn health, our study found that if the total duration of breastfeeding is less than six months, an infection is approximately five times more likely (95% CI = 1.06- 29.56).

CONCLUSION

Overall, the findings of this study indicate that the efforts implemented at Hospital Pedro Hispano to limit the effects of the COVID-19 pandemic had some effect on immediate breastfeeding patterns, but not on the total duration of breastfeeding or newborn health. Nonetheless, more continuous assistance at home would have been beneficial.

Breastfeeding: Knowledge, Perception, And Intention to Practice Among Female Students of Tertiary Institutions in Ekiti, Southwest Nigeria

INTRODUCTION

Breastfeeding is a public health practice that is critical for the survival of infants and young children. This study aimed at determining the knowledge, attitude, and future intention to breastfeed among female undergraduates in tertiary institutions in Ekiti State, Southwest Nigeria.Methodology: A prospective cross-sectional study was conducted among 1312 female students of the tertiary institutions in Ekiti State. By convenience sampling, female students were invited to participate in the study after giving verbal consent and those studying medical, nursing, and other courses allied to medicine were excluded. Internal consistency of the data obtained from this research instrument was determined using Cronbach's coefficient Alpha with a reliability value of 0.82. Data analysis was conducted using SPSS version 25. Descriptive as well as inferential statistics were computed. Results were summarized as frequencies and percentages. The differences in knowledge, attitude, and intention to practice breastfeeding as well as other responses among the participants were compared among age groups, faculties and the sources of information using Chi-square test.

RESULT

Although 93% of the respondents agreed that breast milk is important for the development of the infant's brain thereby demonstrating good knowledge; 51.6% of the respondents demonstrated poor perception to breastfeeding believing breastfeeding makes the breast to sag while only 34% of the respondents indicated their intention to breastfeed their future babies.

CONCLUSION

The intention to breastfeed among our study participants was poor. This study revealed the need to increase awareness about breastfeeding and its benefits among this huge population of future mothers.

Associations between Perinatal Sleepiness and Breastfeeding Intentions and Attitudes and Infant Feeding Behaviors and Beliefs

Breastfeeding rates fall short of public health goals, but barriers are poorly understood. We examined whether excessive sleepiness during pregnancy and the postpartum period was associated with breastfeeding intentions, attitudes, initiation, and continuation in a tobacco-exposed sample participating in a randomized controlled trial to reduce smoke exposure (n = 399). We used the Epworth Sleepiness Scale (ESS) to examine associations between excessive sleepiness in early (12-16 weeks gestation) and late (32 weeks gestation) pregnancy and at 6 months postpartum, with breastfeeding attitudes using the Mitra index, intentions, initiation, and continuation, as well as other infant feeding practices using the Infant Feeding Questionnaire. Logistic regression models adjusted for age, racial/ethnic identity, parity, marital status, and maternal education showed that excessive sleepiness in late pregnancy was associated with less favorable attitudes toward breastfeeding. In addition, in unadjusted models, excessive sleepiness at 6 months postpartum was associated with less of a tendency to use feeding to calm a fussy infant. Excessive sleepiness was not associated with intent, initiation, or continuation of breastfeeding. Assessing excessive sleepiness in late pregnancy may assist in identifying individuals with negative attitudes to breastfeeding and lead to novel approaches to promoting breastfeeding in populations with lower breastfeeding rates.

Case-control study of exclusive breast feeding and severe bronchiolitis in the United States

BACKGROUND

Bronchiolitis is a major cause of infant illness, with few known modifiable risk factors. Breast feeding may reduce risk of severe bronchiolitis, but the association of exclusive vs. partial breast feeding with severe bronchiolitis is unclear.

OBJECTIVE

To estimate the association of exclusive vs. partial breast feeding during ages 0-2.9 months with bronchiolitis hospitalisation during infancy.

METHODS

We conducted a case-control study as a secondary analysis of two prospective US cohorts in the Multicenter Airway Research Collaboration. Cases were enrolled in a 17-centre study of infants hospitalised for bronchiolitis during 2011-2014 (n = 921). Controls were enrolled in a five-centre study of healthy infants during 2013-2014 and 2017 (n = 719). Breast feeding history during ages 0-2.9 months was collected by parent interview. Among breastfed infants, the association of exclusive vs. partial breast feeding with odds of bronchiolitis hospitalisation was estimated using a multivariable logistic regression model adjusted for demographic variables, parental asthma history, and early-life exposures. As a secondary analysis, we estimated the associations of exclusive, predominant, and occasional breast feeding vs. no breast feeding with the odds of bronchiolitis hospitalisation.

RESULTS

Among 1640 infants, the prevalence of exclusive breast feeding was 187/921 (20.3%) among cases and 275/719 (38.3%) among controls. Exclusive vs. partial breast feeding was associated with 48% reduced odds of bronchiolitis hospitalisation (adjusted odds ratio [OR] 0.52, 95% confidence interval [CI] 0.39, 0.69). In the secondary analysis, exclusive vs. no breast feeding was associated with 58% reduced odds of bronchiolitis hospitalisation (OR 0.42, 95% CI 0.23, 0.77), whereas predominant breast feeding (OR 0.77, 95% CI 0.37, 1.57) and occasional breast feeding (OR 0.98, 95% CI 0.57, 1.69) were not associated with meaningfully reduced odds of bronchiolitis hospitalisation.

CONCLUSION

Exclusive breast feeding had a strong protective association against bronchiolitis hospitalisation.

The effect of paid parental leave on breastfeeding, parental health and behavior

Little is known about the effects of paid parental leave (in particular fathers' quotas) on parental health and involvement. In this paper, we exploit a reform that took place in the Canadian province of Quebec to address that important topic. In 2006, Quebec opted out of the federal plan and established its own parental insurance plan, named the Quebec Parental Insurance Plan (QPIP). This program has lowered the eligibility criteria, increased income replacement and introduced fathers' quotas. Using three data sets, we investigate the impact of the QPIP on breastfeeding and parental health and behavior. Our results show that the reform increased breastfeeding duration. The results also suggest that the policy had limited positive effects on parental health and parenting practices.

Infant-Feeding Practices Among Women Living With Human Immunodeficiency Virus (HIV) in a Southern Nigerian Region: A Mixed Comparative Study

Background and objective  Infant survival depends on proper nutrition. Breastfeeding enhances infant health and offers some benefits to the mother as well. However, in the setting of the HIV pandemic, it is important to assess the benefits and the risk for each individual in choosing a feeding option. The purpose of this research was to determine the infant-feeding practices among women living with HIV/AIDS (WLWHA) and compare them with the general population of women. Methods A mixed comparative survey was conducted among 246 HIV-positive mothers nursing infants of at least one year of age. An equal number of matched HIV-negative women from the same locality were selected as controls. Quantitative data were analyzed using IBM SPSS Statistics version 23 (IBM Corp., Armonk, NY) while qualitative findings were presented in a thematic approach. Results The prevalence of exclusive breastfeeding (EBF) among WLWHA was 73.6% compared to 55.2% in the controls [p=0.002; chi-square (X²)=5.264]. Only 6.5% of WLWHA practiced exclusive replacement feeding (ERF). Vaginal birth was associated with increased odds for early initiation of breastfeeding [p=0.001; odds ratio (OR): 3.135; 95% confidence interval (CI): 2.130 to 4.616]. Also, urban dwellers commenced breastfeeding earlier than women residing in rural communities (p=0.002; OR: 5.58; 95% CI: 3.85 to 8.07). Based on in-depth interviews, cultural influences and non-disclosure of HIV status to family members promoted mixed feeding. Concomitant intake of anti-tuberculosis drugs was a major reason for adopting ERF in some women. Conclusion There was a high prevalence of EBF among WLWHA. Counseling on infant feeding is an effective component of the Prevention of Mother-to-Child Transmission (PMTCT) programs. Cultural beliefs and fear of stigmatization are major challenges to infant nutrition in sero-exposed babies.

Changes in Breastfeeding and Lactation Support Experiences During COVID

Background: We surveyed parents who gave birth from 2019 to 2021 to examine changes in breastfeeding experiences and professional and lay breastfeeding support services due to the coronavirus disease 2019 (COVID-19) pandemic. We also examined racial and ethnic disparities in breastfeeding support. Materials and Methods: A cross-sectional opt-in survey of 1,617 parents was administered on Ovia's parenting app in January 2022. Respondents were 18-45 years of age and delivered in one of three birth cohorts: August-December 2019, March-May 2020, or June-August 2021. We fit linear and logistic regression models wherein the outcomes were six breastfeeding support and experience measures, adjusting for birth cohort and respondent demographics. Results: Parents who gave birth in the early pandemic versus those in the prepandemic had reduced odds of interacting with lactation consultants (odds ratio [OR]: 0.63; 95% confidence interval [CI]: 0.44-0.90), attending breastfeeding classes (OR: 0.71; 95% CI: 0.54-0.94), meeting breastfeeding goals (OR: 0.65; 95% CI: 0.46-0.92), and reporting it was easy to get breastfeeding help (estimate: -0.36; 95% CI: -0.55 to -0.17). Birth cohort was not associated with use of donor milk or receipt of in-hospital help. The later pandemic cohort differed from the prepandemic cohort for one outcome: they were less likely to meet their breastfeeding goals (OR: 0.67; 95% CI: 0.48-0.95). There were racial and ethnic disparities in the use of multiple types of breastfeeding support. Although one-third of respondents felt that the pandemic facilitated breastfeeding because of more time at home, 18% felt the pandemic posed additional challenges including disruptions to lactation support. Conclusions: Parents who gave birth in the later pandemic did not report significant disruptions to professional breastfeeding support, likely as a result of the growth of virtual services. However, disparities in receipt of support require policy attention and action.

Children at the Risk of Recurrent Wheezing: A Matched Case-Control Study in a Tertiary Care Center

Introduction Wheezing is a common symptom in early childhood. Recurrent wheezing is defined as more than three episodes of wheezing in the past year. Many studies have been conducted to delineate the risk factors for recurrent wheezing and to predict which of these children will progress to asthma. Most studies about risk factors and the clinicodemographic profile of children with recurrent wheeze have been carried out in developed nations. Data in developing countries may differ. This study was carried out to identify risk factors associated with recurrent wheezing in children in a tertiary care center. Materials and methods It was a retrospective, matched case-control study conducted over a period of two years (July 2019 to July 2021). Records of children aged one month to 12 years who came to pediatric OPD or were admitted to a pediatric ward with a history of recurrent wheezing were included in the study. Cases with uncontrolled recurrent wheezing diagnosed by examination with an unreliable history and those with a global developmental delay were excluded from the study. The study involved the hospital records of 60 children. Of these, 30 were recurrent wheezers, and 30 were non-wheezers (controls). Data were collected with detailed proformas from case histories and examination sheets. The proforma had several known and suspected risk factors associated with wheezes. Each risk factor was studied and compared with the control group. The risk factors included in this study were male gender, not exclusively breastfed, history of bottle feeding, exposure to vehicles; exposure to pollen; exposure to animals; using an agarbatti or dhoop, passive smoking, or playing with a soft toy. Data were entered in an Excel sheet, and appropriate statistical analyses were done. Results The male-to-female ratio was 2:1. Out of the number of cases, 73.33% were younger than six years; 56.66% of cases were not exclusively breastfed, and 43.33% were exclusively breastfed for six months; 20% of the cases were bottle-fed, and 40% of the controls were bottle-fed. The percentage of cases exposed to vehicle smoke was 26.66%, while 20% of cases had exposure to pollen and 16% of controls were exposed to pollen. 30% of cases were exposed to animals, and 23% of controls were exposed to animals. With regard to passive smoking, 16.66% of cases were exposed to passive smoking, and 20% of controls were not exposed to passive smoking. Out of the study group, 26.66% of the children played with soft toys. Of all these risk factors, a significant difference between cases and controls was found in only one factor: not being exclusively breastfed for six months. All other risk factors showed no significant difference between cases and controls. Conclusion The present study concluded that the significant risk factor that was associated with recurrent wheezing was "not exclusively breastfeeding." The other factors studied that were suspected to be associated with recurrent wheezing cannot be ruled out entirely due to the relatively small size of the sample and the need to be studied further in detail.

Understanding the rural-urban disparity in acute respiratory infection symptoms among under-five children in Sub-Saharan Africa: a multivariate decomposition analysis

Background

Acute Respiratory Infections (ARIs) account for more than 6% of the worldwide disease burden in children under the age of five, with the majority occurring in Sub-Saharan Africa. Rural children are more vulnerable to and disproportionately affected by ARIs. As a result, we examined the rural–urban disparity in the prevalence of ARI symptoms and associated factors among children under the age of five in Sub-Saharan Africa.

Methods

We used the most recent Demographic and Health Survey (DHS) data from 36 countries in Sub-Saharan Africa. The study included 199,130 weighted samples in total. To identify variables associated with ARIs symptoms, a multilevel binary logistic regression model was fitted. The Adjusted Odds Ratio (AOR) with a 95% CI was used to determine the statistical significance and strength of the association. To explain the rural–urban disparity in ARI prevalence, a logit-based multivariate decomposition analysis was used.

Results

Being female, ever breastfeeding, belonging to a poorer, better wealth status, and having better maternal educational status were significantly associated with lower odds of ARIs among under-five children. Whereas, small size or large size at birth, not taking vitamin A supplementation, being severely underweight, having diarrhea, didn’t have media exposure, never had the vaccination, being aged 36–47 months, and being aged 48–59 months were significantly associated with higher odds of ARIs among under-five children. The multivariate decomposition analysis revealed that the difference in characteristics (endowment) across residences explained 64.7% of the overall rural–urban difference in the prevalence of ARIs, while the difference in the effect of characteristics (change in coefficient) explained 35.3%.

Conclusion

This study found that rural children were highly affected by ARIs in SSA. To reduce the excess ARIs in rural children, public health interventions aimed at impoverished households, home births, and unvaccinated and malnourished children are crucial.

Impact of Donor Human Milk in an Urban NICU Population

The American Academy of Pediatrics recommends the use of donor human milk in infants when mother’s own milk is not available. Our objective was to analyze whether the use of donor human milk in preterm, very-low-birth-weight (VLBW, <1500 g) infants affected the rates of necrotizing enterocolitis, duration of parenteral nutrition (PN), growth, culture-positive sepsis, length of hospital stay, and mortality in an urban NICU population with low exclusive breast-feeding rates. A retrospective cohort study was conducted comparing two 2-year epochs of VLBW neonates before and after the introduction of donor breast milk in our neonatal intensive care unit (NICU). With the introduction of donor human milk, there was a significant reduction in the rate of necrotizing enterocolitis (NEC) (5% vs. 13%; p = 0.04) and less severe NEC as defined by Stage III based on the Modified Bell Staging Criteria (10% to 3%; p = 0.04). In the donor milk era, there was earlier initiation of enteral feeding (2.69 days vs. 3.84; p = 0.006) and a more rapid return to birthweight (9.5 days. 10.9 days; p = 0.006). In this study, a change in practice to the use of donor breast milk in a population with low rates of human milk provision was associated with earlier initiation of enteral feeding, faster return to birth weight, and a reduced incidence of NEC.

Decreased Passive Immunity to Respiratory Viruses through Human Milk during the COVID-19 Pandemic

Infants may develop severe viral respiratory tract infections because their immune system is still developing in the first months after birth. Human milk provides passive humoral immunity during the first months of life. During the COVID-19 pandemic, circulation of common respiratory viruses was virtually absent due to the preventative measures resulting in reduced maternal exposure. Therefore, we hypothesized that this might result in lower antibody levels in human milk during the pandemic and, subsequently, decreased protection of infants against viral respiratory tract infections. We assessed antibody levels against respiratory syncytial virus (RSV), Influenza virus, and several seasonal coronaviruses in different periods of the COVID-19 pandemic in serum and human milk using a Luminex assay. IgG levels against RSV, Influenza, HCoV-OC43, HCoV-HKU1, and HCoV-NL63 in human milk were reduced with a factor of 1.7 (P < 0.001), 2.2 (P < 0.01), 2.6 (P < 0.05), 1.4 (P < 0.01), and 2.1 (P < 0.001), respectively, since the introduction of the COVID-19 restrictions. Furthermore, we observed that human milk of mothers that experienced COVID-19 contained increased levels of IgG and IgA binding to other respiratory viruses. Passive immunity via human milk against common respiratory viruses was reduced during the COVID-19 pandemic, which may have consequences for the protection of breastfed infants against respiratory infections. IMPORTANCE Passive immunity derived from antibodies in human milk is important for protecting young infants against invading viruses. During the COVID-19 pandemic, circulation of common respiratory viruses was virtually absent due to preventative measures. In this study, we observed a decrease in human milk antibody levels against common respiratory viruses several months into the COVID-19 pandemic. This waning of antibody levels might partially explain the previously observed surge of hospitalizations of infants, mostly due to RSV, when preventative hygiene measures were lifted. Knowledge of the association between preventative measures, antibody levels in human milk and subsequent passive immunity in infants might help predict infant hospital admissions and thereby enables anticipation to prevent capacity issues. Additionally, it is important in the consideration for strategies for future lockdowns to best prevent possible consequences for vulnerable infants.

Perception of mothers about Acute Respiratory Infections (ARIs) and risk factors affecting children Under 5 Years (U5Ys) in Fiji

PURPOSE

To explore the perception of mothers about Acute Respiratory Infections (ARIs) and their risk factors affecting children Under 5 Years (U5Ys) in Fiji.

DESIGN

This was a qualitative study done in the Integrated Management of Childhood Illness (IMCI) Clinic in Ba Hospital, Fiji. Mothers who had brought in their children with ARIs were selected through a purposive sampling method. A semi-structured open-ended questionnaire was used to guide in-depth interviews. The interviews were transcribed and the thematic analysis was done to look at the themes and sub-themes that emerged.

RESULTS

A total of 30 mothers were interviewed. There were five themes that were derived from the interviews including the mothers' perception of ARIs; treatment methods; perceived barriers; services provided by IMCI clinic; and recommendations and suggestions. The mothers were familiar with the causes, risk factors and able to recognize severity of ARIs based on the local context. They mostly relied on traditional and home remedies for ARIs. Most mothers preferred injections for treatment for their child. There were many perceived barriers of ARIs prevention such as traditional norms and poor social support. Most mothers stayed in rural areas which caused poor accessibility to health care services. Few mothers had issues with poor attitude and skills of health care workers.

CONCLUSIONS

There are multiple factors that are barriers in reducing the risks of ARIs. There needs to be policies implemented to support the health of children in the communities as well as social support structures.

PRACTICE IMPLICATIONS

This study provides a clear picture of the perception of the mothers regarding ARIs in children under five years old. With this information at hand, it is easier to answer the question regarding the perceptions of the mothers of ARIs and the risk factors and design tailored interventions to prevent ARIs among children.

Factors Attributed to Breastfeeding Success in a Tertiary Obstetric Hospital

Introduction:

Increasing breastfeeding rates is a national health objective, however substantial barriers and disparities continue to exist in breastfeeding initiation and continuation. Our study aim is to identify factors associated with birthing persons' breastfeeding “success” (patients admitted to Labor & Delivery desiring to breastfeed and discharged breastfeeding) and breastfeeding “failure” (patients admitted to Labor & Delivery desiring to breastfeed and discharged exclusively formula feeding).

Materials and Methods:

We conducted a retrospective cohort study between July 2015 and June 2016. Patients were asked infant feeding plan intentions (breast, formula, combination) upon admission for delivery. Feeding plan was reassessed at discharge from delivery stay and validated to serve as proxy for feeding status at discharge. Logistic regression was used to identify the population(s) most likely to voice intent to breastfeed and to identify predictors of altered breastfeeding intent at discharge.

Results:

Between July 2015 and June 2016, 6690 patients met criteria for analysis. Patients reporting intent to breastfeed before delivery were more likely Caucasian (p < 0.0001), married (p < 0.001), nulliparous (p < 0.01), privately insured (p < 0.0001), educated (p < 0.0001), and older (p < 0.01) compared with patients not intending to breastfeed. These characteristics were similar in those who were “successful breastfeeders,” that is, breastfeeding at discharge. The strongest predictor of breastfeeding at discharge was intent to breastfeed before delivery (p < 0.0001). African American race was the strongest predictor of nonbreastfeeding intent at admission (p < 0.0001) and conversion to formula feeding by hospital discharge (p < 0.001).

Conclusion:

Intent to breastfeed before delivery was the strongest predictor of breastfeeding at discharge; thus, prenatal breastfeeding education within the at-risk population is crucial to increasing breastfeeding rates.

Breastfeeding initiation and duration and acute otitis media among children less than two years of age in Jordan: results from a case-control study

BACKGROUND

Acute otitis media (AOM) is one of the most common infectious diseases that affects children. Breastfeeding has been linked to a lower risk of AOM in the first three years of childhood. The aim of this study was to identify the association between exclusive breastfeeding and the development of acute otitis media (AOM) and investigate the influence of breastfeeding duration on the presence of AOM.

METHODS

In a retrospective case-control study, a sample of 98 children (cases) who were diagnosed with AOM and 98 children (controls) who were not diagnosed with AOM and were younger than two years old were selected from the Jordan University Hospital. Medical records were used to identify children with AOM. For both the case and control groups, the children's mothers completed a self-administered questionnaire about factors linked to the incidence of AOM.The type of feeding and the duration of breastfeeding were assessed using a validated questionnaire.

RESULTS

The data indicated that among children who developed AOM, 23.5%were artificiallyfed, while 22.4% and 13.3% were exclusively breastfed for 3 months and 6 months, respectively. Approximately 70.7% of the children without AOM were exclusively breastfed for 6 months, compared with only 29.3% of the children without AOM who were exclusively breastfed for 3 months.Logistic regression revealed that nonexclusive breastfeeding, exclusive breastfeeding for 3 months, and exclusive breastfeeding for 6 months were protective factors against AOM (OR = 0.23, 0.18, and 0.25, respectively; P < 0.05). A short duration of exclusive breastfeeding was considered a risk factor for the development of AOM (OR = 1.7, P < 0.05).

CONCLUSIONS

The escalation of AOM is tightly connected to the early introduction of formula feeding in the first six months of life. Breastfeeding had a protective impact on the occurrence of AOM. Understanding factors that are associated with the occurrence of AOM in children may support the role of public health institutions and primary health care in the prevention and reduction of AOM episodes and the need for national health strategies to promote breastfeeding.

Proteomic Analysis of Human Milk Reveals Nutritional and Immune Benefits in the Colostrum from Mothers with COVID-19

Despite the well-known benefits of breastfeeding and the World Health Organization’s breastfeeding recommendations for COVID-19 infected mothers, whether these mothers should be encouraged to breastfeed is under debate due to concern about the risk of virus transmission and lack of evidence of breastmilk’s protective effects against the virus. Here, we provide a molecular basis for the breastfeeding recommendation through mass spectrometry (MS)-based proteomics and glycosylation analysis of immune-related proteins in both colostrum and mature breastmilk collected from COVID-19 patients and healthy donors. The total protein amounts in the COVID-19 colostrum group were significantly higher than in the control group. While casein proteins in COVID-19 colostrum exhibited significantly lower abundances, immune-related proteins, especially whey proteins with antiviral properties against SARS-CoV-2, were upregulated. These proteins were detected with unique site-specific glycan structures and improved glycosylation diversity that are beneficial for recognizing epitopes and blocking viral entry. Such adaptive differences in milk from COVID-19 mothers tended to fade in mature milk from the same mothers one month postpartum. These results suggest that feeding infants colostrum from COVID-19 mothers confers both nutritional and immune benefits, and provide molecular-level insights that aid breastmilk feeding decisions in cases of active infection.

Creation of a nationwide breastfeeding policy for surgical residents: a scoping review protocol

INTRODUCTION

Breast feeding is recommended for the first year of a baby's life due to numerous benefits for both the child and mother. After returning from maternity leave, surgical trainees face extensive barriers to breast feeding and tend to terminate breast feeding earlier than guideline recommendations. The aim of this scoping review is to assess existing breastfeeding policies for surgical trainees at the national level including postgraduate medical education offices, provincial resident unions and individual surgical programmes.

METHODS AND ANALYSIS

A modified Arksey and O'Malley (2005) framework will be used. Specifically, (1) identifying the research question/s and (2) relevant studies from electronic databases and grey literature, (3) identifying and (4) selecting studies with independent verification, and (5) collating, summarising, and reporting data while having ongoing consultation between experts throughout the process. Experts will include a lactation consultant (AGB), a human resource leader (JI), a health information specialist (ES), two independent coders (NZ, LR) and a board-certified surgeon (JD). This work will take place as of December 2020 and be carried out to completion in 2021.

ETHICS AND DISSEMINATION

Ethics approval will not be sought for this scoping review. Research findings will be disseminated through publications, presentations and meetings with relevant stakeholders.

Infections and antibiotic use in early life, and obesity in early childhood: a mediation analysis

BACKGROUND/OBJECTIVE

Literature shows a positive association between antibiotics and obesity in childhood, but fails to account for confounding by indication. We evaluate the direct effect of infection on obesity and the indirect effect mediated by antibiotics by performing a mediation analysis of the infection-obesity association.

METHODS

A Medicaid cohort of children age 2-14 years old between 2015-2019 (n = 61,330) is used to perform mediation analysis of infections and antibiotic use in the first year of life, and obesity in childhood in Missouri, U.S.A.

RESULTS

An additional infection increases the risk of obesity in childhood (aIRR = 1.050, p < 0.001); however, mediation by antibiotic use is clinically and statistically insignificant. If the number of infections is not considered in the analysis, then antibiotic use as a risk factor for obesity is overstated (aIRR = 1.037 vs. 1.013 p < 0.001).

CONCLUSIONS

The number of infections exhibits a significant relationship with obesity and is a stronger risk factor for obesity than antibiotic use. In particular, a greater number of bronchitis, otitis media, and upper respiratory infections in the first year of life are associated with a significant increased risk of obesity in childhood. We find only weak evidence that an additional antibiotics claim increases the risk of obesity in childhood and this risk may not be clinically meaningful. Further research is needed to explore the association between early childhood infections, especially in the first 6 months of life, and obesity including the biological mechanism and environmental factor of early life infections associated with obesity.

Barriers to seeking timely treatment for severe childhood pneumonia in rural Bangladesh

OBJECTIVE

Delays in seeking medical attention for childhood pneumonia may lead to increased morbidity and mortality. This study aimed at identifying the drivers of delayed seeking of treatment for severe childhood pneumonia in rural Bangladesh.

METHODS

We conducted a formative study from June to September 2015 in one northern district of Bangladesh. In-depth interviews were conducted with 20 rural mothers of children under 5 years with moderate or severe pneumonia. We analysed the data thematically.

RESULTS

We found that mothers often failed to assess severity of pneumonia accurately due to lack of knowledge or misperception about symptoms of pneumonia. Several factors delayed timely steps that could lead to initiation of appropriate treatment. They included time lost in consultation with non-formal practitioners, social norms that required mothers to seek permission from male household heads (eg, husbands) before they could seek healthcare for their children, avoiding community-based public health centres due to their irregular schedules, lack of medical supplies, shortage of hospital beds and long distance of secondary or tertiary hospitals from households. Financial hardships and inability to identify a substitute caregiver for other children at home while the mother accompanied the sick child in hospital were other factors.

CONCLUSIONS

This study identified key social, economic and infrastructural factors that lead to delayed treatment for childhood pneumonia in the study district in rural Bangladesh. Interventions that inform mothers and empower women in the decision to seek healthcare, as well as improvement of infrastructure at the facility level could lead to improved behaviour in seeking and getting treatment of childhood pneumonia in rural Bangladesh.

Otitis Media and Tympanostomy Tubes

Acute otitis media (AOM) is an acute infection of the middle ear and, depending on the age of the child, the certainty of diagnosis, and the severity of symptoms, should be either observed closely or treated (with high-dose amoxicillin, if not allergic). Host-related risk factors such as age, sex, cleft palate, or genetic predisposition or environmental risk factors such as seasonality, day care attendance, or tobacco smoke exposure may contribute to recurrent AOM (RAOM) episodes. Tympanostomy tubes are recommended in children with RAOM and an abnormal ear examination at the time of the clinic evaluation.

Prenatal breastfeeding knowledge, attitude and intention, and their associations with feeding practices during the first six months of life: a cohort study in Lebanon and Qatar

Background

Prenatal knowledge, attitude, and intention related to breastfeeding are postulated as important modulators of feeding practices. Using data from the Mother and Infant Nutritional Assessment (MINA) study, a three year cohort conducted in Lebanon and Qatar, this study aimed to characterize breastfeeding practices during the first six months postnatally and examine their associations with prenatal breastfeeding knowledge, attitude, exposure, and intention.

Methods

Pregnant women during their first trimester were recruited from primary healthcare centers in Beirut and Doha. Data collection was conducted in 2015 − 2018. Participants were followed-up until the child was twoyears old. Exposure, knowledge, attitude, and intentions regarding breastfeeding were assessed during the third trimester of pregnancy (n = 230), using validated questionnaires and scales. Breastfeeding practices were evaluated at four months (n = 185) and six months (n = 151) postpartum. Early initiation of breastfeeding was defined as putting the infant to the breast within one hour of birth, and exclusive breastfeeding (EBF) as feeding exclusively with breast milk.

Results

Breastfeeding practices were as follows: ever breastfeeding: 95.8%; early initiation of breastfeeding: 72.8%; breastfeeding at four and six months: 70.3% and 62.3%; EBF at four and six months: 35.7% and 18.5%. Over 95% of participants had high breastfeeding exposure, and 68.8% had strong / very strong intentions to breastfeed. Only 25% had very good knowledge, and 9.2% reported positive/strong positive attitude towards breastfeeding. After adjustment, high exposure was associated with greater odds of breastfeeding initiation (OR 10.1: 95% CI 1.25, 80.65). Both positive attitude towards breastfeeding and strong intention to breastfeed were associated with EBF at four months (OR 2.51; 95% CI 1.02, 6.16 and OR 4.0; 95% CI 1.67, 9.6), breastfeeding at four months (OR 2.92: 95% CI 1.29, 6.62 and OR 5.00: 95% CI 2.25, 11.1), and breastfeeding at six months (OR 3.74: 95% CI 1.24, 11.32 and OR 8.29: 95% CI 2.9, 23.68).

Conclusions

Findings of this study documented suboptimal knowledge and attitude towards breastfeeding and showed that prior exposure, a positive attitude, and a strong intention to breastfeed prenatally were significant predictors of breastfeeding practices postnatally. This highlights the need to develop specific interventions and policies aimed at improving breastfeeding attitudes and creating an enabling environment that supports women throughout their breastfeeding journey.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13006-022-00456-x.

Respiratory Syncytial Virus Bronchiolitis Hospitalizations in Young Infants After the Introduction of Paid Family Leave in New York State, 2015‒2019

Objectives. To determine if the introduction of New York State's 8-week paid family leave policy on January 1, 2018, reduced rates of hospitalizations with respiratory syncytial virus (RSV) bronchiolitis or any acute lower respiratory tract infection among young infants. Methods. We conducted an interrupted time series analysis using New York State population-based, all-payer hospital discharge records, October 2015 to December 2019. We estimated the change in monthly hospitalization rates for RSV bronchiolitis and for any acute lower respiratory tract infection among infants aged 8 weeks or younger after the introduction of paid family leave while controlling for temporal trends and RSV seasonality. We modeled RSV hospitalization rates in infants aged 1 year as a control. Results. Hospitalization rates for RSV bronchiolitis and any acute lower respiratory tract infection decreased by 30% after the introduction of paid family leave (rate ratio [RR] = 0.71; 95% confidence interval [CI] = 0.54, 0.94; and RR = 0.72; 95% CI = 0.59, 0.88, respectively). There were no such reductions in infants aged 1 year (RR = 0.98; 95% CI = 0.72, 1.33; and RR = 1.17; 95% CI = 1.03, 1.32, respectively). Conclusions. State paid family leave was associated with fewer RSV-associated hospitalizations in young infants. (Am J Public Health. 2022;112(2):316-324. https://doi.org/10.2105/AJPH.2021.306559).

Factors influencing exclusive breastfeeding for 6 months postpartum: A systematic review

PURPOSE

This systematic review aims to identify factors influencing exclusive breastfeeding (EBF) up to 6 months.

METHODS

The databases including PubMed, MEDLINE, CINAHL, Scopus, EMBASE, CNKI, and WANFANG were searched to retrieve studies. Quantitative research were extracted and the preferred reporting items for systematic reviews were followed. Critical appraisal checklists of Joanna Briggs Institute were used to evaluate the quality of the included studies.

FINDINGS

A total of 16 papers were eligible for this systematic review, comprising five cohort studies and 11 cross-sectional studies. Moderate to strong evidence supported that 6-month exclusive breastfeeding is affected by maternal working status, breastfeeding knowledge, delivery mode, parity, perception of insufficient human milk, mothers' infant feeding attitude, breastfeeding self-efficacy, and intention.

CONCLUSIONS

Factors influencing EBF up to 6 months postpartum play a key role in promoting mothers' health and reducing diseases in their infants.

IMPLICATIONS FOR NURSING PRACTICE

Interventions based on related factors should be developed and taken into practice to assist mothers in exclusive breastfeeding for up to 6 months. Additional studies from different countries in different populations with high quality are needed to provide more reliable and richer findings.

Evaluation of a breastmilk hand expression toolkit: the M.I.L.K survey study

Background

Breastmilk hand expression (BMHE) is recommended to promote lactation, relieve breast engorgement, and collect milk for future infant feedings. Resources to teach this skill are limited and infrequently developed in partnership with the obstetrical population. In collaboration with maternity care experts and individuals with recent breastfeeding experience, we designed a one-page toolkit that describes the process of BMHE and includes step-by-step instructions and images to illustrate the technique. This study aimed to evaluate the readability, clarity of content, layout, and informational value of this BMHE toolkit.

Methods

Individuals who intended to breastfeed, were currently breastfeeding, or had recently breastfed were electronically surveyed and completed a two-part survey that consisted of radio, multi-select, Likert scale, and open-ended questions. Part one captured sociodemographic factors, obstetrical history, and breastfeeding practices. Part two collected feedback on the BMHE toolkit. Participants were recruited electronically through social media and posters were circulated in antenatal and postnatal care settings in Ottawa, Canada between November 2020 and February 2021.

Results

Of the 123 participants, 117 (95.1%) had heard of hand expression prior to reviewing the toolkit and 99 (80.5%) had hand expressed before. Among the 48 participants who were no longer exclusively breastfeeding at the time of the survey, 22 (45.8%) had exclusively breastfed their infant for at least six months and 7 (14.6%) had discontinued exclusive breastfeeding within the first month. When asked about the BMHE toolkit, 118 (95.9%) participants said it was informative, 115 (93.5%) said it was easy to understand, and 114 (92.7%) said it was well laid-out. When asked about information seeking behaviours, participants indicated a preference for online resources (58.5%) and video resources (22.0%).

Conclusions

The BMHE toolkit was well received by participants and the feedback was favourable overall. The survey feedback will be used to create a revised version of the toolkit that has been validated by the obstetrical patient population. Future research should focus on identifying implementation strategies to optimize the use of the toolkit and increase its effectiveness as an educational resource to teach participants correctly BMHE.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13006-021-00448-3.

Neonates and COVID-19: state of the art : Neonatal Sepsis series

The SARS-CoV-2 pandemic has had a significant impact worldwide, particularly in middle- and low-income countries. While this impact has been well-recognized in certain age groups, the effects, both direct and indirect, on the neonatal population remain largely unknown. There are placental changes associated, though the contributions to maternal and fetal illness have not been fully determined. The rate of premature delivery has increased and SARS-CoV-2 infection is proportionately higher in premature neonates, which appears to be related to premature delivery for maternal reasons rather than an increase in spontaneous preterm labor. There is much room for expansion, including long-term data on outcomes for affected babies. Though uncommon, there has been evidence of adverse events in neonates, including Multisystem Inflammatory Syndrome in Children, associated with COVID-19 (MIS-C). There are recommendations for reduction of viral transmission to neonates, though more research is required to determine the role of passive immunization of the fetus via maternal vaccination. There is now considerable evidence suggesting that the severe visitation restrictions implemented early in the pandemic have negatively impacted the care of the neonate and the experiences of both parents and healthcare professionals alike. Ongoing collaboration is required to determine the full impact, and guidelines for future management. IMPACT: Comprehensive review of current available evidence related to impact of the COVID-19 pandemic on neonates, effects on their health, impact on their quality of care and indirect influences on their clinical course, including comparisons with other age groups. Reference to current evidence for maternal experience of infection and how it impacts the fetus and then neonate. Outline of the need for ongoing research, including specific areas in which there are significant gaps in knowledge.

SARS-CoV-2 Antibodies in Breast Milk After Vaccination

BACKGROUND AND OBJECTIVES

Passive and active immunity transfer through human milk (HM) constitutes a key element in the infant's developing immunity. Certain infectious diseases and vaccines have been described to induce changes in the immune components of HM.

METHODS

We conducted a prospective cohort single-institution study from February 2 to April 4, 2021. Women who reported to be breastfeeding at the time of their coronavirus disease 2019 (COVID-19) vaccination were invited to participate. Blood and milk samples were collected on day 14 after their second dose of the vaccine. Immunoglobulin G (IgG) antibodies against nucleocapsid protein as well as IgG, immunoglobulin M and immunoglobulin A (IgA) antibodies against the spike 1 protein receptor-binding domain against severe acute respiratory syndrome coronavirus 2 (anti-SARS-CoV-2 RBD-S1) were analyzed in both serum and HM samples.

RESULTS

Most of the participants (ie, 94%) received the BNT162b2 messenger RNA COVID-19 vaccine. The mean serum concentration of anti-SARS-CoV-2 RBD-S-IgG antibodies in vaccinated individuals was 3379.6 ± 1639.5 binding antibody units per mL. All vaccinated study participants had anti-SARS-CoV-2 RBD-S1-IgG, and 89% of them had anti-SARS-CoV-2 RBD-S-IgA in their milk. The antibody concentrations in the milk of mothers who were breastfeeding 24 months were significantly higher than in mothers with breastfeeding periods <24 months (P < .001).

CONCLUSIONS

We found a clear association between COVID-19 vaccination and specific immunoglobulin concentrations in HM. This effect was more pronounced when lactation periods exceeded 23 months. The influence of the lactation period on immunoglobulins was specific and independent of other variables.

Risk factors for childhood pneumonia: a case-control study in a high prevalence area in Indonesia

BACKGROUND

Acute respiratory infections (ARIs), especially pneumonia, remain a major cause of infant mortality worldwide. In Indonesia, pneumonia is the second most common cause of infant and toddler deaths. Exclusive breastfeeding and basic immunization can protect infants and children from contracting pneumonia.

PURPOSE

Our goal was to assess the risk factors for childhood pneumonia in regions with a high prevalence of pneumonia in Indonesia.

METHODS

This case-control study was conducted between March and April 2019. A total of 176 infants and toddlers aged 10-59 months were enrolled and selected from among patients who visited the community health center. Cases of pneumonia were diagnosed clinically based on the World Health Organization guidelines, and the control was nonpneumonia.

RESULTS

The risk factors for the diagnosis of pneumonia included no or nonexclusive breastfeeding (odds ratio [OR], 7.95; 95% confidence interval [CI], 3.52-17.94), incomplete basic immunizations (OR, 4.47; 95% CI, 2.22-8.99), indoor air pollution (OR, 7.12; 95% CI, 3.03-16.70), low birth weight (OR, 3.27; 95% CI, 1.19-8.92), and a high degree of wasting (OR, 2.77; 95% CI, 1.06-7.17). Other variables such as nutritional status (height-for-age z score), age, sex, and educational status of the mother were not risk factors for pneumonia.

CONCLUSION

No or nonexclusive breastfeeding, incomplete basic immunizations, indoor air pollution, a history of low birth weight, and severe malnutrition were risk factors for childhood pneumonia. Breastfeeding was the dominant factor, while sex modified the relationship between exclusive breastfeeding and the incidence of pneumonia.

Dynamics of breast milk antibody titer in the six months following SARS-CoV-2 infection

Background

: While a growing body of literature describes antibody dynamics in serum, little is known about breast milk antibody titers in the months following SARS-CoV-2 infection.

Objectives

: We evaluated the dynamics of the humoral immune response to SARS-CoV-2 in two women who were breastfeeding when infected. We assessed paired breast milk and serum samples for six months post-infection for antibodies specific to the SARS-CoV-2 receptor binding domain (RBD) of the spike protein.

Results

: Starting at 10 days after symptom onset, IgA antibody levels were persistent over a 6-month time period in human milk. For both mothers, no detectable IgA was found in the samples collected pre-symptom onset. RBD-specific IgG and IgM antibodies in tandem serum collected from the two donors demonstrated stable IgG levels over the six-month time period post-symptom onset.

Conclusions

: We found that breastfeeding mothers produced a durable IgA response for up to six months following COVID-19 infection, suggesting an important role for breast milk in protection of infants.

Risk factors for recurrent respiratory tract infection in preschool-aged children

BACKGROUND

We aimed to identify potential risk factors for recurrent respiratory tract infection among Chinese preschool-aged children, and further to construct a nomogram prediction model.

METHODS

This is a cross-sectional survey conducted in Beijing. Utilizing a stratified cluster random sampling strategy, a total of 7222 children from 20 kindergartens were enrolled. Data are analyzed by STATA software and R language.

RESULTS

Five independent factors were identified to be significantly associated with recurrent respiratory tract infection risk overall and by pathogenic sites. The significant odds of recurrent respiratory tract infection was 8.31 (95% confidence interval [CI]: 5.69-12.12, P < 0.001), 2.31 (2.06-2.58, P < 0.001), 1.72 (1.48-1.99, P < 0.001), 1.24 (1.08-1.43, P = 0.002), and 1.19 (1.09-1.31, P < 0.001) for asthma, allergy, initial use of antibiotics <6 months, breastfeeding duration <6 months, and maternal body mass index, respectively. Besides the leading role played by asthma, allergy, initial use of antibiotics, and breastfeeding might exert a graded, dose-dependent effect on recurrent respiratory tract infection susceptibility.

CONCLUSIONS

We have identified five potential risk factors for the risk of recurrent respiratory tract infection from 7222 preschool-aged Chinese children. Notably, asthma plays a leading role, and allergy, initial use of antibiotics, and breastfeeding might exert a graded, dose-dependent effect on recurrent respiratory tract infection susceptibility.

IMPACT

This is the first report of examining the joint contribution of multiple potential risk factors to recurrent respiratory tract infection among Chinese preschool-aged children. We have identified five potential risk factors for the risk of recurrent respiratory tract infection via analyzing survey data from 7222 preschool-aged Chinese children. Asthma plays a leading role, and allergy, initial use of antibiotics, and breastfeeding might exert a graded, dose-dependent effect on recurrent respiratory tract infection susceptibility.

An exploratory study to investigate alcohol consumption among breast-feeding mothers

OBJECTIVE

We examined the likelihood of breast-feeding mothers consuming alcohol according to several socio-demographic factors.

DESIGN

We carried out secondary data analyses using participant information obtained from a cross-sectional survey designed to capture the dietary habits of UK infants aged 4-18 months.

SETTING

Data concerning breast-feeding mothers' social and domestic circumstances and alcohol consumption were drawn from the 2011 Diet and Nutrition Survey of Infants and Young Children.

PARTICIPANTS

Complete data from 2683 breast-feeding mothers were included, and further analyses were carried out on those who continued to drink alcohol (n 227).

RESULTS

Logistic regression enabled the identification of social factors associated with breast-feeding and continued alcohol consumption among mothers. Several social factors were found to influence the likelihood of breast-feeding mothers drinking alcohol. For example, older mothers, mothers with partners who drank alcohol, those with higher educational attainment and household income and those who consumed alcohol whilst pregnant were more likely to continue to drink alcohol. Mothers' breast-feeding infants older than 12 months were less likely to drink alcohol than those feeding infants aged 4-6 months.

CONCLUSIONS

Evidence suggests that social circumstances influence the likelihood of alcohol use among mothers who are breast-feeding. Greater understanding of mothers' decision making with respect to the continuation or discontinuation of alcohol use whilst breast-feeding, according to the social context in which they live, is warranted.

Lithium Medication in Pregnancy and Breastfeeding-A Case Series

Lithium salts are the first-line prophylaxis treatment for bipolar disorder in most guidelines. The majority of bipolar women are treated with mood stabilizers at the time they wish to get pregnant. One reason for this is the rising average age at first childbirth, at least in the high-income countries, which increases in general the likelihood of a medication with psychotropic drugs. Previously, lithium exposition during pregnancy was thought to strongly increase the risk of severe cardiac malformation. However, recent studies only point to a low teratogenic risk, so nowadays an increasing number of women are getting pregnant with ongoing lithium treatment. Regarding lithium medication during breastfeeding, there is evidence that lithium transfers to the breastmilk and can also be detected in the infants’ serum. The influence on the infant is still a largely understudied topic. Regular monitoring of the infants’ renal clearance, thyroid function, and lithium levels is warranted when breastfeeding under lithium exposure. In this case series, we present three case reports of bipolar mothers who were treated with lithium during pregnancy and breastfeeding to add to the scarce literature on this important topic. In short, we strengthen the importance of therapeutic drug monitoring due to fluctuating plasma levels during pregnancy and after birth, and we can report the birth and development of three healthy infants despite lithium medication during pregnancy and breastfeeding.

Breastfeeding positions and techniques used by canadians with physical disabilities

BACKGROUND

Breastfeeding is recommended by both the World Health Organization and the Canadian Pediatric Society due to the numerous maternal and infant benefits. Current literature examining breastfeeding among people with physical disabilities is limited to the United States with limited information about the Canadian context.

OBJECTIVE

The primary aim of this study was to identify breastfeeding positions and techniques used by people with physical disabilities and explore their perceptions of effectiveness in a Canadian context where individuals had universal access to a lactation consultant.

METHODS

A cross-sectional interview-based study was undertaken. Individuals were eligible for the study if they breastfed within the last 10 years and a) used a mobility device or b) experienced dysmobility, weakness or pain due to a medical condition while breastfeeding. Interviews were semi-structured to allow in-depth exploration of breastfeeding techniques and perceptions of effectiveness. The interviews were audiotaped, professionally transcribed, and assessed for content surrounding the use and effectiveness of breastfeeding positions and techniques.

RESULTS

Eleven people participated in our study. Participants in our sample mentioned a variety of techniques used to breastfeed including a) accessories, b) assistance from others, c) breastfeeding positions, and d) location of feeding.

CONCLUSIONS

People with physical disabilities use a variety of breastfeeding techniques to overcome physical limitations. This practical advice may improve guidance for healthcare professionals, including lactation consultants, to better support people with physical disabilities meet their breastfeeding goals.

Is exclusive breastfeeding for six-months protective against pediatric tuberculosis?

Experts recommend exclusive breastfeeding from birth to six months because it protects against deadly childhood illness, including respiratory tract infections and diarrhea. We hypothesized that exclusive breastfeeding would decrease the risk of active tuberculosis (TB) in children. We analyzed cross-sectional data from 279 children in Lima, Peru aged 6 to 59 months with TB symptoms and a close adult contact with TB. Mothers self-reported breastfeeding, and children were evaluated for TB per national guidelines. To quantify the association between exclusive breastfeeding and TB, we estimated prevalence ratios using a generalized linear model with a log link, binomial distribution, and robust variance. Twenty-two percent of children were diagnosed with TB and 72% were exclusively breastfed for six months. We found no evidence that six months of exclusive breastfeeding was associated with TB disease in either bivariate analyses (prevalence ratio [PR] = 1.5; 95%CI = 0.8–2.5) or multivariable analyses adjusting for sex and socioeconomic status (adjusted PR = 1.6; 95%[CI] = 0.9–2.7). In post hoc analyses among children whose close TB contact was their mother, we found evidence of a weak positive association between breastfeeding and TB (aPR = 2.1; 95%[CI] = 0.9–4.9). This association was not apparent among children whose close contact was not the mother (aPR = 1.2; 95%[CI] = 0.6–2.4). Our results raise the possibility that children who are breastfed by mothers with TB may be at increased risk for TB, given the close contact. Due to the cross-sectional study design, these results should be interpreted with caution. If these findings are confirmed in longitudinal analyses, future interventions could aim to minimize TB transmission from mothers with TB to breastfeeding infants.

Breastfeeding practice, breastfeeding policy and hospitalisations for infectious diseases in early and later childhood: a register-based study in Uppsala County, Sweden

OBJECTIVE

To examine the association between breastfeeding practice and hospitalisations for infectious diseases in early and later childhood, in particular, to compare exclusive breast feeding 4-5 months with exclusive breastfeeding 6 months or more. Thereby, provide evidence to inform breastfeeding policy.

DESIGN

A register-based cohort study.

SETTING

A cohort was created by combining the Swedish Medical Birth Register, the National Inpatient Register, the Cause of Death Register, the Total Population Register, the Longitudinal integration database for health insurance and labour market studies, with the Uppsala Preventive Child Health Care database.

PATIENTS

37 825 term and post-term singletons born to women who resided in Uppsala County (Sweden) between 1998 and 2010.

MAIN OUTCOME MEASURES

Number of hospitalisations for infectious diseases in early (<2 years) and later childhood (2-4 years).

RESULTS

The risk of hospitalisations for infectious diseases decreased with duration of exclusive breastfeeding until 4 months of age. In early childhood, breast feeding was associated with a decreased risk of enteric and respiratory infections. In comparison with exclusive breast feeding 6 months or more, the strongest association was found between no breastfeeding and enteric infections (adjusted incidence rate ratios, aIRR 3.32 (95% CI 2.14 to 5.14)). In later childhood, breast feeding was associated with a lower risk of respiratory infections. In comparison with children exclusively breastfed 6 months or more, the highest risk was found in children who were not breastfed (aIRR 2.53 (95% CI 1.51 to 4.24)). The risk of hospitalisations for infectious diseases was comparable in children exclusively breastfed 4-5 months and children exclusively breastfed 6 months or more.

CONCLUSIONS

Our results support breastfeeding guidelines that recommend exclusive breastfeeding for at least 4 months.

Human Milk from Previously COVID-19-Infected Mothers: The Effect of Pasteurization on Specific Antibodies and Neutralization Capacity

BACKGROUND

Since the outbreak of coronavirus disease 2019 (COVID-19), many put their hopes in the rapid availability of effective immunizations. Human milk, containing antibodies against syndrome coronavirus 2 (SARS-CoV-2), may serve as means of protection through passive immunization. We aimed to determine the presence and pseudovirus neutralization capacity of SARS-CoV-2 specific IgA in human milk of mothers who recovered from COVID-19, and the effect of pasteurization on these antibodies.

METHODS

This prospective case control study included lactating mothers, recovered from (suspected) COVID-19 and healthy controls. Human milk and serum samples were collected. To assess the presence of SARS-CoV-2 antibodies we used multiple complementary assays, namely ELISA with the SARS-CoV-2 spike protein (specific for IgA and IgG), receptor binding domain (RBD) and nucleocapsid (N) protein for IgG in serum, and bridging ELISA with the SARS-CoV-2 RBD and N protein for specific Ig (IgG, IgM and IgA in human milk and serum). To assess the effect of pasteurization, human milk was exposed to Holder (HoP) and High Pressure Pasteurization (HPP).

RESULTS

Human milk contained abundant SARS-CoV-2 antibodies in 83% of the proven cases and in 67% of the suspected cases. Unpasteurized milk with and without these antibodies was found to be capable of neutralizing a pseudovirus of SARS-CoV-2 in (97% and 85% of the samples respectively). After pasteurization, total IgA antibody levels were affected by HoP, while SARS-CoV-2 specific antibody levels were affected by HPP. Pseudovirus neutralizing capacity of the human milk samples was only retained with the HPP approach. No correlation was observed between milk antibody levels and neutralization capacity.

CONCLUSIONS

Human milk from recovered COVID-19-infected mothers contains SARS-CoV-2 specific antibodies which maintained neutralization capacity after HPP. All together this may represent a safe and effective immunization strategy after HPP.

Influence of different breast expression techniques on human colostrum macronutrient concentrations

OBJECTIVE

To evaluate the effects of breast expression methods on macronutrient and caloric concentrations in human colostrum.

STUDY DESIGN

A cross-sectional study in which colostrum samples were collected simultaneously from each breast using different milk expression methods, including manual expression or electric pumping, assigned by simple randomization. Macronutrients were measured by infrared spectroscopy, and their concentrations were compared by the Wilcoxon test.

RESULTS

Ninety-six samples from each breast of selected donors were evaluated. There were no differences in carbohydrate (6.1 vs. 6.1 g/dL; p: 0.218) and protein (2.1 vs. 2.1 g/dL; p: 0.772) concentrations between the samples collected by manual expression and electric pumping. However, in those collected by manual expression, lipid concentrations (2.6 vs. 2.2 g/dL; p < 0.001) and caloric content (60 vs. 57 Kcal/dL; p = 0.001) were higher.

CONCLUSIONS

Colostrum collected by hand expression had a higher lipid concentration and caloric content than that collected by an electric pump.

Duration of breastmilk feeding of NICU graduates who live with individuals who smoke

BACKGROUND

Breast milk has many benefits for infants, but initiating breastfeeding/pumping can be difficult for mothers of preterm infants, especially those who smoke (or live with individuals who smoke). The primary aim of this study was to identify risks for breastfeeding/pumping cessation with neonatal intensive care unit (NICU) infants' mothers who smoke or live with individuals who smoke, using a novel survival-analytic approach.

METHODS/DESIGN

Mothers (N = 360) were recruited for a secondhand smoke prevention intervention during infants' NICU hospitalizations and followed for ~6 months after infant discharge. Data were obtained from medical records and participant self-report/interviews.

RESULTS

The sample was predominantly ethnic/racial minorities; mean age was 26.8 (SD = 5.9) years. One-fifth never initiated breastfeeding/pumping (n = 67; 18.9%) and mean time-to-breastfeeding cessation was 48.1 days (SD = 57.2; median = 30.4 [interquartile range: 6.0-60.9]). Education, length of stay, employment, race/ethnicity, number of household members who smoke, and readiness-to-protect infants from tobacco smoke were significantly associated with breastfeeding cessation. Further, infants fed breast milk for ≥4 months had 42.7% more well-child visits (p < 0.001) and 50.0% fewer respiratory-related clinic visits (p < 0.05).

CONCLUSIONS

One-quarter of infants admitted to NICUs will be discharged to households where individuals who smoke live; we demonstrated that smoking-related factors were associated with mothers' breastfeeding practices. Infants who received breast milk longer had fewer respiratory-related visits.

IMPACT

One-quarter of NICU infants will be discharged to households where smokers live. Initiating/sustaining breastfeeding can be difficult for mothers of preterm NICU infants, especially mothers who smoke or live with others who smoke. Education, employment, race/ethnicity, length of stay, household member smoking, and readiness-to-protect infants from tobacco smoke were significantly associated with time-to-breastfeeding cessation. Infants fed breast milk for ≥4 months had 42.7% more well-child visits and 50.0% fewer respiratory-related clinic visits, compared to infants fed breast milk <4 months. Data support intervention refinements for mothers from smoking households and making NICU-based healthcare workers aware of risk factors for early breastfeeding cessation.

Early life factors and COVID-19 infection in England: A prospective analysis of UK Biobank participants

This study aims to examine whether maternal smoking, birth weight, birth month and breastfeeding are associated with COVID-19 infection and hospitalisation. Maternal smoking was positively associated with COVID-19 infection. Breastfeeding was negatively associated with COVID-19 infection. The odds of being hospitalised due to COVID-19 were higher among those who had lower birthweight and mothers who were smoking during pregnancy.

Using Videos to Teach Medical Learners How to Address Common Breastfeeding Problems

INTRODUCTION

Though breast milk is the recommended first food, only 84% of mothers try breastfeeding, and 19% of those babies are supplemented with formula by the second day of life. Mothers often fall short of their breastfeeding goals, which has been traced in part to primary care physicians' discomfort and lack of confidence in assisting breastfeeding mothers. A video-based educational intervention was developed to enhance learner comfort and confidence in supporting breastfeeding.

METHODS

Prior to watching the videos, two separate groups of learners (25 primary care residents and 40 medical students) were given two assessments to assess their baseline knowledge and self-perceived comfort and confidence with breastfeeding based on the American Academy of Pediatrics residency breastfeeding curriculum. We gave the learners a checklist to guide their observations while watching the videos. The learners repeated the assessments after watching the videos.

RESULTS

Students who participated showed a statistically significant increase in breastfeeding knowledge and self-perceived comfort and confidence in assisting mothers with common breastfeeding problems. Additionally, residents increased their knowledge and confidence, but not their comfort with breastfeeding.

DISCUSSION

The videos seem to have been most helpful in assisting learners with confidence with helping breastfeeding mothers and knowledge of breastfeeding. The videos also improved student comfort but were less effective in increasing residents' comfort as residents generally self-rated their comfort level as high preceding the video curriculum. These videos provide an effective way to begin sensitizing learners to the importance of breastfeeding, common challenges, and potential solutions for new mothers.

Frontline Science: Breast milk confers passive cellular immunity via CD8-dependent mechanisms

Most modern research into the immune effects of breast milk has focused on the impacts of immunoglobulin or oligosaccharide content. However, immediately prior to parturition, the cell populations of breast milk become selectively enriched for CD8+ T cells of an effector memory subtype. Despite this observation that the cellular content of breast milk contains a distinct leukocyte population when compared to peripheral blood, the physiologic role of these CD8+ effector memory cells is unknown. Research encompassing animal models and humans has demonstrated that leukocytes are capable of transferring antigen-specific immunity even when lysed, dialyzed to enrich for fractions less than 10 kDa, and orally administered. Our previous work built upon these reports to elucidate several aspects of this dialyzable leukocyte extract (DLE) activity: only DLE from T effector memory CD8+ cells was capable of transferring antigen-specific immunity; the DLE activity was TCRβ dependent; dendritic cells (DCs) were the cellular target of DLE; and DLE enhanced immune activity in epithelial challenge models via induction of IL-6 from DCs. Herein, we reveal that breast milk dialysate activates similar cytokine and genetic pathways as DLE taken from peripheral blood and murine spleens through TCRβ- and CD8-dependent mechanisms. These findings suggest that the CD8+ memory T cells enriched in breast milk, even after potential lysis in the infant gut, may represent a mechanism for passive transfer of cellular immunity from mother to child.

Bio-therapeutics from human milk: prospects and perspectives

Human milk is elixir for neonates and is a rich source of nutrients and beneficial microbiota required for infant growth and development. Its benefits prompted research into probing the milk components and their use as prophylactic or therapeutic agents. Culture-independent estimation of milk microbiome and high-resolution identification of milk components provide information, but a holistic purview of these research domains is lacking. Here, we review the current research on bio-therapeutic components of milk and simplified future directions for its efficient usage. Publicly available databases such as PubMed and Google scholar were searched for keywords such as probiotics and prebiotics related to human milk, microbiome and milk oligosaccharides. This was further manually curated for inclusion and exclusion criteria relevant to human milk and clinical efficacy. The literature was classified into subgroups and then discussed in detail to facilitate understanding. Although milk research is still in infancy, it is clear that human milk has many functions including protection of infants by passive immunization through secreted antibodies, and transfer of immune regulators, cytokines and bioactive peptides. Unbiased estimates show that the human milk carries a complex community of microbiota which serves as the initial inoculum for establishment of infant gut. Our search effectively screened for evidence that shows that milk also harbours many types of prebiotics such as human milk oligosaccharides which encourage growth of beneficial probiotics. The milk also trains the naive immune system of the infant by supplying immune cells and stimulatory factors, thereby strengthening mucosal and systemic immune system. Our systematic review would improve understanding of human milk and the inherent complexity and diversity of human milk. The interrelated functional role of human milk components especially the oligosaccharides and microbiome has been discussed which plays important role in human health.

Evaluation of Rooming-in Practice for Neonates Born to Mothers With Severe Acute Respiratory Syndrome Coronavirus 2 Infection in Italy

IMPORTANCE

The management of mother-infant dyads during the ongoing severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic constitutes a major issue for neonatologists. In mothers with SARS-CoV-2 infection, current recommendations suggest either to separate the dyad or encourage protected rooming-in under appropriate precautions. No data are available regarding the risk of mother-to-infant transmission of SARS-CoV-2 during rooming-in.

OBJECTIVE

To evaluate the risk of postnatal transmission of SARS-CoV-2 from infected mothers to their neonates following rooming-in and breastfeeding.

DESIGN, SETTING, AND PARTICIPANTS

A prospective, multicenter study enrolling mother-infant dyads from March 19 to May 2, 2020, followed up for 20 days of life (range, 18-22 days), was performed. The study was conducted at 6 coronavirus disease 2019 maternity centers in Lombardy, Northern Italy. Participants included 62 neonates born to 61 mothers with SARS-CoV-2 infection who were eligible for rooming-in practice based on the clinical condition of the mother and infants whose results of nasopharyngeal swabs were negative at birth.

EXPOSURES

Mothers with SARS-CoV-2 infection were encouraged to practice rooming-in and breastfeeding under a standardized protocol to minimize the risk of viral transmission.

MAIN OUTCOMES AND MEASURES

Clinical characteristics and real-time reverse transcriptase-polymerase chain reaction for SARS-CoV-2 on neonatal nasopharyngeal swabs at 0, 7, and 20 days of life.

RESULTS

Of the 62 neonates enrolled (25 boys), born to 61 mothers (median age, 32 years; interquartile range, 28-36 years), only 1 infant (1.6%; 95% CI, 0%-8.7%) was diagnosed as having SARS-CoV-2 infection at postbirth checks. In that case, rooming-in was interrupted on day 5 of life because of severe worsening of the mother's clinical condition. The neonate became positive for the virus on day 7 of life and developed transient mild dyspnea. Ninety-five percent of the neonates enrolled were breastfed.

CONCLUSIONS AND RELEVANCE

The findings of this cohort study provide evidence-based information on the management of mother-infant dyads in case of SARS-CoV-2 maternal infection suggesting that rooming-in and breastfeeding can be practiced in women who are able to care for their infants.