Outbreak of invasive Group A streptococcus disease in a nursing home in Ireland in February 2023 caused by emm type 18

An out-of-season increase in cases of invasive Group A streptococcus (iGAS) was observed in Ireland between October 2022 and August 2023. We describe the management of an iGAS outbreak involving three nursing home residents in Ireland in early 2023. A regional Department of Public Health was notified of an iGAS case in a nursing home resident in January 2023. When two further cases among residents were notified 7 days later, an outbreak was declared. Surveillance for GAS/iGAS infection in residents and staff was undertaken. The site was visited to provide infection prevention and control (IPC) support. Isolates were emm typed. A total of 38 residents and 29 staff in contact with resident cases were provided with antibiotic chemoprophylaxis. Seven additional staff with no direct resident contact also received chemoprophylaxis after finding one probable localised GAS infection among them. No more iGAS cases subsequently occurred.Site visit recommendations included advice on terminal cleaning and cleaning of shared equipment, as well as strengthening staff education on hand hygiene and masking. All isolates were of emm subtype 18.12, a subtype not previously detected in Ireland. Key outbreak control measures were rapid delivery of IPC support and chemoprophylaxis. Emm18 is infrequently associated with GAS infections.

A national survey of parents' views on childhood vaccinations in Ireland

INTRODUCTION

Vaccine hesitancy is complex and multifactorial and a threat to global health. Uptake of some recommended childhood immunisations in Ireland remains below World Health Organisation targets. The aim of this study was to determine factors associated with vaccine uptake in Ireland.

METHODS

A cross-sectional, national survey of parental attitudes towards childhood vaccination for children aged 0 to 48 months was conducted between June and August 2021 (N = 855). A descriptive analysis of questionnaire responses was conducted. Univariate and multivariable logistic regression models were constructed to identify the association of demographic parental characteristics and parental vaccine attitude scores with a delay in or lack of parental vaccine acceptance.

RESULTS

There was a strongly positive sentiment towards childhood vaccinations. Self-reported uptake of recommended vaccines was 96.1 % with a strong belief in the importance (94.4 %) and safety (89.2 %) of vaccines. Trust in official vaccine information sources was high; 91.5 % and 89.2 % reported trust in the vaccine information provided by healthcare professionals and the Health Service Executive (HSE) respectively. The most commonly identified reasons for missed vaccines were concerns about safety and vaccine side effects. In multivariable regression analysis, parental trust in official vaccine information sources was a significant predictor of vaccine acceptance. For every one unit increase in the median parental trust in official vaccine information score, the odds of a parent having reduced vaccine acceptance decreased significantly (aOR 0.27 95 % CI 0.16, 0.46, p < 0.001).

CONCLUSION

Understanding parental attitudes towards vaccination will inform the development of evidence-informed, targeted interventions to increase childhood immunisation uptake. Vaccine information for parents should focus on vaccine safety and public health action should be taken to build trust and engage communities in order to increase and sustain the uptake of childhood vaccines delivered as part of the national childhood primary immunisation programme in Ireland.

Immunocompromise among vaccinated versus unvaccinated COVID-19 cases admitted to critical care in Ireland, July to October 2021

As the COVID-19 pandemic progressed, so too did the proportion of cases admitted to critical care in Ireland who were fully vaccinated. Reporting of this observation has public health implications as incorrect interpretation may affect public confidence in COVID-19 vaccines. A potential explanation is the reduced ability of those who are immunocompromised to produce an adequate, sustained immune response to vaccination. We conducted an analysis of the association between COVID-19 vaccination status and underlying degree of immunocompromise among a cohort of critical care patients all with a confirmed diagnosis of COVID-19 admitted to critical care between July and October 2021. Multinomial logistic regression was used to estimate an odds ratio of immunocompromise among vaccinated COVID-19 cases in critical care compared to unvaccinated cases. In this study, we found a statistically significant association between the vaccination status of severe COVID-19 cases requiring critical care admission and underlying immunocompromise. Fully vaccinated patients were significantly more likely to be highly (OR=19.3, 95% CI 7.7 – 48.1) or moderately immunocompromised (OR=9.6, 95% CI 5.0 – 18.1) compared to unvaccinated patients with COVID-19. These findings support our hypothesis, that highly immunocompromised patients are less likely to produce an adequate and sustained immune response to COVID-19 vaccination, and are therefore more likely to require critical care admission for COVID-19 infection.

Views on COVID-19 vaccination of young children in Ireland, results from a cross-sectional survey of parents

Vaccination of children aged 5 years and older is recommended as part of a multifaceted strategy to protect children against SARS CoV-2 infection and serious disease, and to control the spread of infection. COVID-19 vaccine trials in children aged less than5 years are underway, however, parental acceptance of vaccines for this age group is unknown. Between June and August 2021, a cross-sectional national survey of parental attitudes towards childhood vaccination in Ireland was conducted. Parents of children aged 0–48 months were surveyed to determine their attitudes towards COVID-19 vaccines for their children. A total of 855 parents were surveyed. Overall, 50.6 % reported that they intend to vaccinate their child, 28.7 % reported that they did not intend to vaccinate and 20.2 % were unsure. Among those who stated that they did not intend to vaccinate their child, concern about risks and side effects of vaccination was the primary reason reported (45.6 %). The most frequently reported information needs related to side effects of the vaccine (64.7 %) and vaccine safety (60.3 %). Results of the multivariable analysis showed that believing COVID-19 can be a serious illness in children was a strong predictor of parental intention to vaccinate (aOR 4.88, 95 % CI 2.68, 8.91, p-value < 0.001). In comparison with Irish-born parents, parents born in a Central and Eastern European country were less likely to report intention to vaccinate (aOR 0.21, 95 % CI 0.09, 0.47, p-value, <0.001). Parental belief in vaccine importance and safety and parental trust in official vaccine information sources were associated with increased parental intention to vaccinate. Understanding parental attitudes to vaccination of young children against COVID-19 is important to tailor the provision of information to parents’ needs, and to inform the development of vaccination information and communication campaigns for current and future COVID-19 immunisations programmes for children.

Managing Advanced HIV Disease in a Public Health Approach

In 2017, the World Health Organization (WHO) published guidelines for the management of advanced human immunodeficiency virus (HIV) disease within a public health approach. Recent data suggest that more than a third of people starting antiretroviral therapy (ART) do so with advanced HIV disease, and an increasing number of patients re-present to care at an advanced stage of HIV disease following a period of disengagement from care. These guidelines recommend a standardized package of care for adults, adolescents, and children, based on the leading causes of morbidity and mortality: tuberculosis, severe bacterial infections, cryptococcal meningitis, toxoplasmosis, and Pneumocystis jirovecii pneumonia. A package of targeted interventions to reduce mortality and morbidity was recommended, based on results of 2 recent randomized trials that both showed a mortality reduction associated with delivery of a simplified intervention package. Taking these results and existing recommendations into consideration, WHO recommends that a package of care be offered to those presenting with advanced HIV disease; depending on age and CD4 cell count, the package may include opportunistic infection screening and prophylaxis, including fluconazole preemptive therapy for those who are cryptococcal antigen positive and without evidence of meningitis. Rapid ART initiation and intensified adherence interventions should also be proposed to everyone presenting with advanced HIV disease.

Leave no one behind: response to new evidence and guidelines for the management of cryptococcal meningitis in low-income and middle-income countries

In 2018, WHO issued guidelines for the diagnosis, prevention, and management of HIV-related cryptococcal disease. Two strategies are recommended to reduce the high mortality associated with HIV-related cryptococcal meningitis in low-income and middle-income countries (LMICs): optimised combination therapies for confirmed meningitis cases and cryptococcal antigen screening programmes for ambulatory people living with HIV who access care. WHO's preferred therapy for the treatment of HIV-related cryptococcal meningitis in LMICs is 1 week of amphotericin B plus flucytosine, and the alternative therapy is 2 weeks of fluconazole plus flucytosine. In the ACTA trial, 1-week (short course) amphotericin B plus flucytosine resulted in a 10-week mortality of 24% (95% CI -16 to 32) and 2 weeks of fluconazole and flucytosine resulted in a 10-week mortality of 35% (95% CI -29 to 41). However, with widely used fluconazole monotherapy, mortality because of HIV-related cryptococcal meningitis is approximately 70% in many African LMIC settings. Therefore, the potential to transform the management of HIV-related cryptococcal meningitis in resource-limited settings is substantial. Sustainable access to essential medicines, including flucytosine and amphotericin B, in LMICs is paramount and the focus of this Personal View.

CD4 Cell Count Threshold for Cryptococcal Antigen Screening of HIV-Infected Individuals: A Systematic Review and Meta-analysis

Background

Current guidelines recommend screening all people living with human immunodeficiency virus (PLHIV) who have a CD4 count ≤100 cells/µL for cryptococcal antigen (CrAg) to identify those patients who could benefit from preemptive fluconazole treatment prior to the onset of meningitis. We conducted a systematic review to assess the prevalence of CrAg positivity at different CD4 cell counts.

Methods

We searched 4 databases and abstracts from 3 conferences up to 1 September 2017 for studies reporting prevalence of CrAg positivity according to CD4 cell count strata. Prevalence estimates were pooled using random effects models.

Results

Sixty studies met our inclusion criteria. The pooled prevalence of cryptococcal antigenemia was 6.5% (95% confidence interval [CI], 5.7%-7.3%; 54 studies) among patients with CD4 count ≤100 cells/µL and 2.0% (95% CI, 1.2%-2.7%; 21 studies) among patients with CD4 count 101-200 cells/µL. Twenty-one studies provided sufficient information to compare CrAg prevalence per strata; overall, 18.6% (95% CI, 15.4%-22.2%) of the CrAg-positive cases identified at ≤200 cells/µL (n = 11823) were identified among individuals with a CD4 count 101-200 cells/µL. CrAg prevalence was higher among inpatients (9.8% [95% CI, 4.0%-15.5%]) compared with outpatients (6.3% [95% CI, 5.3%-7.4%]).

Conclusions

The findings of this review support current recommendations to screen all PLHIV who have a CD4 count ≤100 cells/µL for CrAg and suggest that screening may be considered at CD4 cell count ≤200 cells/µL.

The Uptake of Human Papillomavirus Vaccine In Irish Schools: The Impact Of Disadvantage

HPV vaccine Gardasil© is offered to girls in first year of secondary school in Ireland. We aimed to determine the association between HPV vaccine uptake among girls for academic year 2013/2014, by school and school characteristics: socioeconomic disadvantage and religious ethos. The National Schools Immunisation System (SIS) was searched to determine HPV vaccine uptake in schools for 2013/2014 (prior to recent anti-HPV vaccine publicity). The disadvantaged status and ethos of each school was added to the report. In total 577 schools were identified. Mean vaccine uptake was 83.7%. Disadvantaged schools had a lower mean uptake (%) than other schools (79.4% vs 85.0%, difference 5.58%, 95%CI 2.69-8.21) and were twice as likely to have an uptake of ?50% (OR 2.07, 95% CI 2.76 - 5.18). No difference was found between schools of different ethoses. HPV vaccine uptake is lower in disadvantaged Irish schools. Policies should be developed to ensure a more equitable uptake of HPV vaccine.

An ongoing measles outbreak linked to a suspected imported case, Ireland, April to June 2016

We report an outbreak of measles which started in April 2016 and which, by 13 June, has resulted in 22 confirmed and five probable measles cases occurring in four regions of Ireland. Genotype B3 was identified. We describe the identification, ongoing investigation and control measures being implemented. This outbreak occurs during a period of very low measles transmission in Ireland, with only one confirmed case (imported) notified in 2016 before this event.

Modelling of pancreatic ductal adenocarcinoma in vitro with three-dimensional microstructured hydrogels

Development of a novelin vitro3D model of pancreas cancer based on microstructured polyelectrolyte complex (mPEC) hydrogel.

Patients Hospitalised with an Acute Exacerbation of COPD: Is There a Need for a Discharge Bundle of Care?

Acute Exacerbations of COPD (AECOPD) are the commonest cause of hospitalisation for patients with COPD. A number of interventions are known to improve care for such patients. Internationally and in Ireland, there is significant variation in care delivered to such patients. We reviewed admissions with AECOPD (n = 174) to an Irish teaching hospital during one year, to determine if recommended interventions had been delivered to patients prior to discharge. The most frequently delivered of such interventions were: assessment of oxygen requirements 151 (87%) and arrangements for follow-up 135 (78%). The least frequently delivered were: referral for pulmonary rehabilitation 19 (11%) and advice given regarding influenza vaccination 27 (17%). Patients who received care from a respiratory physician or respiratory clinical nurse specialist (RCNS) received more interventions than those cared for by other specialties. This study demonstrates poor compliance with internationally agreed interventions. The introduction of a discharge bundle of care for use in Irish hospitals should be considered.

A Survey of Lung Health and COPD Awareness amongst Participants at a Mobile Spirometry Clinic

Chronic Obstructive Pulmonary Disease (COPD) is a leading cause of death in Ireland. It affects over 440,000 people 10%of Ireland's population), but awareness of COPD is low. COPD Support Ireland is a national charity established to advocate for and support those with COPD. For World COPD Day 2013, a mobile clinic visited 5 locations to provide information about COPD and free spirometry testing. In this study, we evaluated participants' level of knowledge about COPD and whether this was correlated with a number of variables. Participants completed a questionnaire (352). Questionnaires were analysed to ascertain this self-presenting population's characteristics. Most (247, 70.2%) were smokers/ex-smokers, yet only 168 (47.7%) knew of COPD. Almost 18% (63, 17.9%) required referral to GPs with abnormal spirometry results. Our findings suggest the need for greater COPD education and awareness to increase earlier diagnosis, reduce health care costs and improve quality of life.