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Okeke IN, de Kraker MEA, Van Boeckel TP, Kumar CK, Schmitt H, Gales AC, Bertagnolio S, Sharland M, Laxminarayan R. The scope of the antimicrobial resistance challenge. Lancet 2024; 403:2426-2438. [PMID: 38797176 DOI: 10.1016/s0140-6736(24)00876-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 04/03/2024] [Accepted: 04/25/2024] [Indexed: 05/29/2024]
Abstract
Each year, an estimated 7·7 million deaths are attributed to bacterial infections, of which 4.95 million are associated with drug-resistant pathogens, and 1·27 million are caused by bacterial pathogens resistant to the antibiotics available. Access to effective antibiotics when indicated prolongs life, reduces disability, reduces health-care expenses, and enables access to other life-saving medical innovations. Antimicrobial resistance undoes these benefits and is a major barrier to attainment of the Sustainable Development Goals, including targets for newborn survival, progress on healthy ageing, and alleviation of poverty. Adverse consequences from antimicrobial resistance are seen across the human life course in both health-care-associated and community-associated infections, as well as in animals and the food chain. The small set of effective antibiotics has narrowed, especially in resource-poor settings, and people who are very young, very old, and severely ill are particularly susceptible to resistant infections. This paper, the first in a Series on the challenge of antimicrobial resistance, considers the global scope of the problem and how it should be measured. Robust and actionable data are needed to drive changes and inform effective interventions to contain resistance. Surveillance must cover all geographical regions, minimise biases towards hospital-derived data, and include non-human niches.
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Affiliation(s)
- Iruka N Okeke
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria.
| | - Marlieke E A de Kraker
- Infection Control Program, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland; WHO Collaborating Centre on AMR, Geneva, Switzerland
| | - Thomas P Van Boeckel
- Health Geography and Policy Group, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland; One Health Trust, Bengaluru, India
| | | | - Heike Schmitt
- Centre for Zoonoses and Environmental Microbiology, Dutch National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands; Environmental Biotechnology, Faculty of Applied Sciences, Delft University of Technology, Delft, Netherlands
| | - Ana C Gales
- Division of Infectious Diseases, Paulista School of Medicine, Federal University of São Paulo (EPM-UNIFESP), São Paulo, Brazil
| | - Silvia Bertagnolio
- Department of Surveillance, Control, and Prevention of Antimicrobial Resistance, WHO, Geneva, Switzerland
| | - Mike Sharland
- Centre for Neonatal and Paediatric Infection, St George's, University London, London, UK
| | - Ramanan Laxminarayan
- One Health Trust, Bengaluru, India; High Meadows Environmental Institute, Princeton University, Princeton, NJ, USA.
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Thomas R, Ondongo-Ezhet C, Motsoaledi N, Sharland M, Clements M, Velaphi S. Incidence, pathogens and antimicrobial resistance of blood and cerebrospinal fluid isolates from a tertiary neonatal unit in South Africa: A 10 year retrospective review. PLoS One 2024; 19:e0297371. [PMID: 38241304 PMCID: PMC10798535 DOI: 10.1371/journal.pone.0297371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/29/2023] [Indexed: 01/21/2024] Open
Abstract
OBJECTIVE To determine trends in incidence, etiology and antimicrobial susceptibility of blood and cerebrospinal fluid (CSF) culture confirmed infections in hospitalized infants in a large tertiary neonatal unit in South Africa. METHODS Single-center, retrospective review of laboratory records of bacteria and fungi, and their susceptibility profiles, isolated from blood and CSF of infants hospitalized in the neonatal unit at Chris Hani Baragwanath Academic Hospital, Johannesburg, South Africa, from 1st January 2010 to 31st December 2019. Laboratory data on isolates and their antimicrobial susceptibilities were collected. Coagulase-negative Staphylococcus, Corynebacteria and Bacillus spp. were excluded. Patient-level clinical and laboratory data were not available. RESULTS There were 8,319 significant isolates, giving an infection rate of 14.3/1000 patient-days. Infection rates increased from 12.0 to 15.7/1000 patient-days (estimated average yearly change 0.6[95%CI, 0.5-0.7];p = <0.001). Gram-negative infection rates increased from 4.3 to 10.8/1000 patient-days (estimated average yearly change 0.7[95%CI,0.6-0.8];p = <0.001). The 2 most commonly isolated Gram-negative organisms were Acinetobacter baumannii (44%) and Klebsiella pneumoniae (39%). Carbapenem resistance was seen in 31% of all Gram-negatives and increased over time (estimated average yearly change 4.8%[95%CI,4.2%-5.3%];p<0.001). Gram-positive infection rates decreased (estimated average yearly change -0.1[95%CI,-0.2- -0.05];p = <0.001). Staphylococcus aureus was the most common Gram-positive isolated. Rates of methicillin-resistant Staphylococcus aureus decreased from 91% to 55%(estimated average yearly change -2.8%[95%CI,-3.5%-2%],p< 0.001). Rates of fungal isolates decreased (estimated average yearly change -0.06[95%CI,-0.1 --0.02]);p = 0.007). Candida parapsilosis (52%) and Candida albicans (35%) were the most common fungi isolated. CONCLUSIONS There has been a marked overall increase in rates of blood and/or CSF infections, with an absolute increase in Gram-negative infections observed, replacing Gram-positive and fungal pathogens. Extended spectrum beta-lactamase Gram-negative isolates are being replaced by carbapenem resistance, with around one third of all significant Gram-negative isolates now carbapenem resistant. Research into hospital based novel treatment and prevention interventions for neonatal sepsis should be urgently prioritized.
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Affiliation(s)
- Reenu Thomas
- Faculty of Health Sciences, Department of Paediatrics, Chris Hani Baragwanath Academic Hospital and School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - Claude Ondongo-Ezhet
- Faculty of Health Sciences, Department of Paediatrics, Chris Hani Baragwanath Academic Hospital and School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - Nini Motsoaledi
- Faculty of Health Sciences, Department of Paediatrics, Chris Hani Baragwanath Academic Hospital and School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - Mike Sharland
- St. Georges, University of London, London, United Kingdom
| | | | - Sithembiso Velaphi
- Faculty of Health Sciences, Department of Paediatrics, Chris Hani Baragwanath Academic Hospital and School of Clinical Medicine, University of the Witwatersrand, Johannesburg, South Africa
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Xu J, Fang L, Chen J, Chen X, Yang H, Zhang W, Wu L, Chen D. Real-life effects, complications, and outcomes in 39 critically ill neonates receiving continuous kidney replacement therapy. Pediatr Nephrol 2023; 38:3145-3152. [PMID: 36988692 DOI: 10.1007/s00467-023-05944-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 03/01/2023] [Accepted: 03/09/2023] [Indexed: 03/30/2023]
Abstract
BACKGROUND Continuous kidney replacement therapy (CKRT) has been expanded from simple kidney replacement therapy to the field of critical illness in children. However, CKRT is rarely used in critically ill neonates in the neonatal intensive care unit (NICU). This study aimed to describe patients' clinical characteristics at admission and CKRT initiation, CKRT effects, short-term outcomes, and predictors of death in critically ill neonates. METHODS A 7-year single-center retrospective study in a tertiary NICU. RESULTS Thirty-nine critically ill neonates received CKRT between May 2015 and April 2022 with a mortality rate of 35.9%. The most common primary diagnosis was neonatal sepsis in 15 cases (38.5%). Continuous veno-venous hemodiafiltration and continuous veno-venous hemofiltration were applied in 43.6% and 56.4% of neonates, respectively. The duration of CKRT was 44 (18, 72) h. Thirty-one patients (79.5%) had complications due to CKRT-related adverse events, and the most common complication was thrombocytopenia. Approximately 12 h after the CKRT initiation, urine volume, mean arterial pressure, and pH were increased, and serum creatinine, blood urea nitrogen, and blood lactate were decreased. In the multivariate logistic regression analysis, neonatal critical illness score [odds ratio 0.886 (0.786 ~ 0.998), P = 0.046] was an independent risk factor for death in critically ill neonates who received CKRT. CONCLUSIONS CKRT can be an effective and feasible technique in critically ill neonates, but the overall mortality and CKRT-related complications are relatively high. Furthermore, the probability of death is greater among neonates with greater severity of illness at CKRT initiation. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
- Jinglin Xu
- Department of Neonatology, Fujian Province, Quanzhou Maternity and Children's Hospital, Fengze Street, No 700, Quanzhou, 362000, China
| | - Lingyu Fang
- Department of Neonatology, Fujian Province, Quanzhou Maternity and Children's Hospital, Fengze Street, No 700, Quanzhou, 362000, China
| | - Jiangbin Chen
- Department of Neonatology, Fujian Province, Quanzhou Maternity and Children's Hospital, Fengze Street, No 700, Quanzhou, 362000, China
| | - Xinhua Chen
- Department of Neonatology, Fujian Province, Quanzhou Maternity and Children's Hospital, Fengze Street, No 700, Quanzhou, 362000, China
| | - Hansong Yang
- Department of Neonatology, Fujian Province, Quanzhou Maternity and Children's Hospital, Fengze Street, No 700, Quanzhou, 362000, China
| | - Weifeng Zhang
- Department of Neonatology, Fujian Province, Quanzhou Maternity and Children's Hospital, Fengze Street, No 700, Quanzhou, 362000, China
| | - Lianqiang Wu
- Department of Neonatology, Fujian Province, Quanzhou Maternity and Children's Hospital, Fengze Street, No 700, Quanzhou, 362000, China
| | - Dongmei Chen
- Department of Neonatology, Fujian Province, Quanzhou Maternity and Children's Hospital, Fengze Street, No 700, Quanzhou, 362000, China.
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Mandomando I, Mwenda JM, Nakamura T, de Gouveia L, von Gottberg A, Kwambana-Adams BA, Antonio M, Messa A, Litt D, Seaton S, Weldegebriel GG, Biey JNM, Serhan F. Evaluation of Laboratories Supporting Invasive Bacterial Vaccine-Preventable Disease (IB-VPD) Surveillance in the World Health Organization African Region, through the Performance of Coordinated External Quality Assessment. Trop Med Infect Dis 2023; 8:413. [PMID: 37624351 PMCID: PMC10459392 DOI: 10.3390/tropicalmed8080413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/26/2023] Open
Abstract
(1) Background: Laboratories supporting the invasive bacteria preventable disease (IB-VPD) network are expected to demonstrate the capacity to identify the main etiological agents of pediatric bacterial meningitis (PBM) (Neisseria meningitidis, Streptococcus pneumoniae and Haemophilus influenzae) on Gram stains and in phenotypic identification. Individual reports of sentinel site (SSL), national (NL) and regional reference (RRL) laboratories participating in the World Health Organization (WHO)-coordinated external quality assessment, distributed by the United Kingdom National External Quality Assessment (EQA) Services (UK NEQAS) for Microbiology between 2014 and 2019 were analyzed. (2) Methods: The panels consisted of (1) unstained bacterial smears for Gram staining, (2) viable isolates for identification and serotyping/serogrouping (ST/SG) and (3) simulated cerebral spinal fluid (CSF) samples for species detection and ST/SG using polymerase chain reaction (PCR). SSLs and NLs tested for Gram staining and species identification (partial panel). RRLs, plus any SSLs and NLs (optionally) also analyzed the simulated CSF samples (full panel). The passing score was ≥75% for NLs and SSLs, and ≥90% for RRLs and NLs/SSLs testing the full panel. (3) Results: Overall, 63% (5/8) of the SSLs and NLs were able to correctly identify the targeted pathogens, in 2019; but there were challenges to identify Haemophilus influenzae either on Gram stains (35% of the labs failed 2014), or in culture. Individual performance showed inconsistent capacity, with only 39% (13/33) of the SSLs/NLs passing the EQA exercise throughout all surveys in which they participated. RRLs performed well over the study period, but one of the two failed to reach the minimal passing score in 2016 and 2018; while the SSLs/NLs that optionally tested the full panel scored between 75% and 90% (intermediate pass category). (4) Conclusions: We identified a need for implementing a robust quality management system for timely identification of the gaps and then implementing corrective and preventive actions, in addition to continuous refresher training in the SSLs and NLs supporting the IB-VPD surveillance in the World Health Organization, Regional Office for Africa (WHO AFRO).
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Affiliation(s)
- Inacio Mandomando
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo P.O. Box 1929, Mozambique; (I.M.)
- Instituto Nacional de Saúde (INS), Maputo P.O. Box 3943, Mozambique
- ISGlobal, Hospital Clínic, Universitat de Barcelona, 08036 Barcelona, Spain
| | - Jason M. Mwenda
- World Health Organization (WHO), Regional Office for Africa, Brazzaville P.O. Box 06, Congo
| | - Tomoka Nakamura
- Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK;
- School of Tropical Medicine and Global Health, Nagasaki University, Nagasaki 852-8523, Japan
- Department of Immunization, Vaccines and Biologicals, World Health Organization, 1202 Geneva, Switzerland;
| | - Linda de Gouveia
- Centre for Respiratory Diseases and Meningitis, National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg 2131, South Africa; (L.d.G.); (A.v.G.)
| | - Anne von Gottberg
- Centre for Respiratory Diseases and Meningitis, National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg 2131, South Africa; (L.d.G.); (A.v.G.)
| | - Brenda A. Kwambana-Adams
- Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Banjul P.O. Box 273, The Gambia; (B.A.K.-A.); (M.A.)
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool L7 8XZ, UK
| | - Martin Antonio
- Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, Banjul P.O. Box 273, The Gambia; (B.A.K.-A.); (M.A.)
- Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
- Centre for Epidemic Preparedness and Response, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Augusto Messa
- Centro de Investigação em Saúde de Manhiça (CISM), Maputo P.O. Box 1929, Mozambique; (I.M.)
| | - David Litt
- Respiratory and Vaccine Preventable Bacteria Reference Unit, United Kingdom Health Security Agency (Formerly Public Health England), London NW9 5EQ, UK;
- World Health Organization Collaborating Centre for Haemophilus Influenzae and Streptococcus Pneumoniae, United Kingdom Health Security Agency (Formerly Public Health England), London SW1P 3JR, UK
| | - Shila Seaton
- United Kingdom National External Quality Assessment Service (UK NEQAS) for Microbiology, United Kingdom Health Security Agency (Formerly Public Health England), London NW9 1GH, UK;
| | | | - Joseph Nsiari-Muzeyi Biey
- World Health Organization (WHO), Inter Country Support Team (IST), Ouagadougou 03 BP 7019, Burkina Faso;
| | - Fatima Serhan
- Department of Immunization, Vaccines and Biologicals, World Health Organization, 1202 Geneva, Switzerland;
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Talbert A, Ngari M, Obiero C, Nyaguara A, Mwangome M, Mturi N, Ouma N, Otiende M, Berkley J. Trends in inpatient and post-discharge mortality among young infants admitted to Kilifi County Hospital, Kenya: a retrospective cohort study. BMJ Open 2023; 13:e067482. [PMID: 36631234 PMCID: PMC9835934 DOI: 10.1136/bmjopen-2022-067482] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
OBJECTIVES To describe admission trends and estimate inpatient and post-discharge mortality and its associated exposures, among young infants (YI) admitted to a county hospital in Kenya. DESIGN Retrospective cohort study. SETTING Secondary level hospital. PARTICIPANTS YI aged less than 60 days admitted to hospital from January 2009 to December 2019: 12 271 admissions in 11 877 individuals. YI who were resident within a Kilifi Health and Demographic Surveillance System (KHDSS): n=3625 with 4421 admissions were followed-up for 1 year after discharge. PRIMARY AND SECONDARY OUTCOME MEASURES Inpatient and 1-year post-discharge mortality, the latter in KHDSS residents. RESULTS Of 12 271 YI admissions, 4421 (36%) were KHDSS-resident. Neonatal sepsis, preterm complications and birth asphyxia accounted for 83% of the admissions. The proportion of YI among under-5s admissions increased from 19% in 2009 to 34% in 2019 (Ptrend=0.02). Inpatient case fatality was 16%, with 66% of the deaths occurring within 48 hours of admission. The introduction of free maternity care in 2013 was not associated with a change in admissions or inpatient mortality among YI. During 1-year post-discharge, 208/3625 (5.7%) YI died, 64.3 (95% CI 56.2 to 73.7) per 1000 infant-years. 49% of the post-discharge deaths occurred within 1 month of discharge, and 49% of post-discharge deaths occurred at home. Both inpatient and post-discharge deaths were associated with low admission weight. Inpatient mortality was associated with clinical signs of disease severity, while post-discharge mortality was associated with the length of hospitalisation, leaving against advice and referral to a specialised hospital. CONCLUSIONS YIs accounted for an increasing proportion of paediatric admissions and their overall mortality remains high. Post-discharge mortality accounts for a lower proportion of deaths but mortality rate is higher than among children aged 2-59 months. Services to address post-discharge mortality are needed and should focus on infants at higher risk.
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Affiliation(s)
| | - Moses Ngari
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Christina Obiero
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
- Department of Global Health, University of Amsterdam, Amsterdam, The Netherlands
| | - Amek Nyaguara
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | | | - Neema Mturi
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Nelson Ouma
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - Mark Otiende
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
| | - James Berkley
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya
- Centre for Tropical Medicine & Global Health, University of Oxford, Oxford, Oxfordshire, UK
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Ghanchi NK, Ahmed I, Kim J, Harakuni S, Somannavar MS, Zafar A, Tikmani SS, Saleem S, Goudar SS, Dhaded SM, Guruprasad G, Yogeshkumar S, Hwang K, Aceituno A, Silver RM, McClure EM, Goldenberg RL. Pathogens Identified by Minimally Invasive Tissue Sampling in India and Pakistan From Preterm Neonatal Deaths: The PURPOSE Study. Clin Infect Dis 2022; 76:e1004-e1011. [PMID: 36104850 PMCID: PMC9907547 DOI: 10.1093/cid/ciac747] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/22/2022] [Accepted: 09/08/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND We identified pathogens found in internal organs and placentas of deceased preterm infants cared for in hospitals in India and Pakistan. METHODS Prospective, observational study conducted in delivery units and neonatal intensive care units. Tissue samples from deceased neonates obtained by minimally invasive tissue sampling and placentas were examined for 73 different pathogens using multiplex polymerase chain reaction (PCR). RESULTS Tissue for pathogen PCR was obtained from liver, lung, brain, blood, cerebrospinal fluid, and placentas from 377 deceased preterm infants. Between 17.6% and 34.1% of each type of tissue had at least 1 organism identified. Organism detection was highest in blood (34.1%), followed by lung (31.1%), liver (23.3%), cerebrospinal fluid (22.3%), and brain (17.6%). A total of 49.7% of the deceased infants had at least 1 organism. Acinetobacter baumannii was in 28.4% of the neonates compared with 14.6% for Klebsiella pneumoniae, 11.9% for Escherichia coli/Shigella, and 11.1% for Haemophilus influenzae. Group B streptococcus was identified in only 1.3% of the neonatal deaths. A. baumannii was rarely found in the placenta and was found more commonly in the internal organs of neonates who died later in the neonatal period. The most common organism found in placentas was Ureaplasma urealyticum in 34% of the samples, with no other organism found in >4% of samples. CONCLUSIONS In organ samples from deceased infants in India and Pakistan, evaluated with multiplex pathogen PCR, A. baumannii was the most commonly identified organism. Group B streptococcus was rarely found. A. baumannii was rarely found in the placentas of these deceased neonates.
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Affiliation(s)
- Najia Karim Ghanchi
- Department of Pathology & Laboratory Medicine, Aga Khan University, Karachi, Pakistan
| | - Imran Ahmed
- Department of Pathology & Laboratory Medicine, Aga Khan University, Karachi, Pakistan
| | - Jean Kim
- Social, Statistical and Environmental Health Sciences, RTI International, Durham, North Carolina, USA
| | - Sheetal Harakuni
- KLE Academy of Higher Education and Research's, J.N. Medical College, Belagavi, Karnataka, India
| | - Manjunath S Somannavar
- KLE Academy of Higher Education and Research's, J.N. Medical College, Belagavi, Karnataka, India
| | - Afia Zafar
- Department of Pathology & Laboratory Medicine, Aga Khan University, Karachi, Pakistan
| | | | - Sarah Saleem
- Department of Community Health Sciences, Aga Khan University, Karachi, Pakistan
| | - Shivaprasad S Goudar
- KLE Academy of Higher Education and Research's, J.N. Medical College, Belagavi, Karnataka, India
| | - Sangappa M Dhaded
- KLE Academy of Higher Education and Research's, J.N. Medical College, Belagavi, Karnataka, India
| | - Gowdar Guruprasad
- Department of Pediatrics, Bapuji Educational Association, J.J.M. Medical College, Davangere, Karnataka, India
| | - S Yogeshkumar
- KLE Academy of Higher Education and Research's, J.N. Medical College, Belagavi, Karnataka, India
| | - Kay Hwang
- Social, Statistical and Environmental Health Sciences, RTI International, Durham, North Carolina, USA
| | - Anna Aceituno
- Social, Statistical and Environmental Health Sciences, RTI International, Durham, North Carolina, USA
| | - Robert M Silver
- Department of Obstetrics and Gynecology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Elizabeth M McClure
- Correspondence: E. M. McClure, RTI International 3040 Cornwallis Rd, Durham, NC 27516 ()
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