Millions of Bangladeshi Children Missed Their Scheduled Vaccination Amidst COVID-19 Pandemic

The Government of Bangladesh imposed a movement control order as a mass quarantine strategy to control the outbreak of coronavirus disease 2019 (COVID-19). Adherence to the home quarantine may put children at risk by missing routine vaccination. In this study, we investigated the impact of COVID-19 on child routine immunization in a rural area of Bangladesh and consider the broader implications. Data for this study comes from the Chakaria Health and Demographic Surveillance System (HDSS) of icddr,b with a population of 90,000 people residing in 16,000 households in 49 villages in a rural, coastal area of Southeast Bangladesh. We used an explanatory sequential mixed methods design which involved two phases between March 1, 2020, and May 31, 2020: first, we observed 258 outreach sessions of 86 EPI centers. We calculated the number of Expanded Program on Immunization (EPI) outreach sessions suspended and the number of children who missed their routine vaccination due to the COVID-19. We extrapolated the number of Bangladeshi children who missed their routine vaccination using Chakaria HDSS observations. Secondly, we conducted in-depth interviews to explain the quantitative results. The EPI outreach session (EOS) declined to 74.42% (95% CI 63.97–83.22), 10.45% (95% CI 5.00–18.94), and 3.45% (95% CI 1.00–9.75) from 2019 levels in March, April, and May 2020, respectively. By extrapolation, in Bangladesh, between March and May 2020, 3.2 million children missed their scheduled vaccination compared to 2019. Results from in-depth interviews showed that the unwillingness of villagers to hold EOS and the absenteeism of the vaccinators due to social distancing recommendations and lack of personal safety measures were the main reasons for the discontinuation of the EOS. Resuming EPI outreach sessions and introducing a special catch-up program is essential to prevent future outbreaks and deaths due to vaccine-preventable diseases in Bangladesh and the countries where children missed their routine vaccination due to COVID-19. This health system failure should be considered a factor in all future pandemic preparedness plans.

Seroprevalence of IgG antibodies against diphtheria antitoxin among migrant workers in Singapore, 2016–2019

Background Since the last local case of diphtheria in 1992, there had not been any case in Singapore until an autochthonous case was reported in 2017. This fatal diphtheria case of a migrant worker raised concerns about the potential re-emergence of locally transmitted toxigenic diphtheria in Singapore. We conducted a seroprevalence study to assess the immunity levels to diphtheria among migrant workers in Singapore. Methods Residual sera from migrant workers who hailed from Bangladesh, China, India, Indonesia, Malaysia, Myanmar and the Philippines were tested for anti-diphtheria toxoid immunoglobulin G (IgG) antibodies. These migrant workers previously participated in a survey between 2016 and 2019 and had provided blood samples as part of the survey procedure. Results A total of 2176 migrant workers were included in the study. Their overall mean age was 27.1 years (standard deviation 5.0), range was 20–43 years. The proportion having at least basic protection against diphtheria (antitoxin titres ≥ 0.01 IU/ml) ranged from 77.9% (95% confidence interval [CI] 72.8 – 82.3%) among migrant workers from Bangladesh to 96.7% (95% CI 92.5 – 98.6%) in those hailing from Malaysia. The proportion showing full protection (antitoxin titres ≥ 0.10 IU/ml) ranged from 10.1% (95% CI 6.5 – 15.4%) in Chinese workers to 23.0% (95% CI 17.1 – 30.3%) in Malaysian workers. There were no significant differences in the proportion with at least basic protection across birth cohorts, except for those from Bangladesh where the seroprevalence was significantly lower in younger migrant workers born after 1989. Conclusions The proportions having at least basic protection against diphtheria in migrant workers from five out of seven Asian countries (India, Indonesia, Malaysia, Myanmar and the Philippines) were higher than 85%, the threshold for diphtheria herd immunity. Seroprevalence surveys should be conducted periodically to assess the level of immunity against diphtheria and other vaccine preventable diseases in migrant worker population, so that appropriate interventions such as booster vaccination can be implemented proactively to prevent sporadic outbreaks.

Determinants of COVID-19 Vaccine Acceptance in Ghana

Background: A proven strategy for saving lives from vaccine-preventable diseases is the timely vaccination of the people. In Ghana, there is considerable hesitation about the Covid-19 vaccines due to anxieties and uncertainties about their safety. With varying perceptions and believes being developed about Covid-19 vaccines, there is a likely negative effect on vaccine acceptance or otherwise. This study aims to ascertain the levels of acceptance of potential Covid-19 vaccine among Ghanaian adults, to identify predictors of vaccine acceptance or hesitance. Methodology: A web based cross-sectional survey conducted among Ghanaians above 18 years, conducted between the month of February and March, 2021. Data were collected by administering online google forms (Questionnaire). The questionnaire was shared through social media platforms. A snowball sampling technique was used where researchers shared google forms to close friends and family. Analyses were conducted at p-value <0.05 using descriptive statistics, cross-tabula­tions and logistic regression. Results: A total of 350 responses were achieved by end of data collection. Out of these, only 348 were considered for analysis based on the inclusion and exclusion criteria. Majority of the respondents (65.2%) were male, a third (30%) of them live in rural areas and about 57.5% were married. Factors such as age, educational level, prior vaccine acceptance history, personal vulnerability and self-feeling of health were significantly associated with covid-19 vaccine acceptance. Conclusion: The results depict low acceptance rate for potential covid-19 vaccine among Ghanaians. Government and MoH should engage the media on its role in combating misinformation with regards the Covid-19 vaccine. Key words: coronavirus disease 2019 (Covid-19), vaccine, hesitance, acceptance.

COVID-19 impact on routine immunisations for vaccine-preventable diseases: Projecting the effect of different routes to recovery

Introduction: Over the past two decades, vaccination programmes for vaccine-preventable diseases (VPDs) have expanded across low- and middle-income countries (LMICs). However, the rise of COVID-19 resulted in global disruption to routine immunisation (RI) activities. Such disruptions could have a detrimental effect on public health, leading to more deaths from VPDs, particularly without mitigation efforts. Hence, as RIs resume, it is important to estimate the effectiveness of different approaches for recovery. Methods: We apply an impact extrapolation method developed by the Vaccine Impact Modelling Consortium to estimate the impact of COVID-19-related disruptions with different recovery scenarios for ten VPDs across 112 LMICs. We focus on deaths averted due to RIs occurring in the years 2020- 2030 and investigate two recovery scenarios relative to a no-COVID-19 scenario. In the recovery scenarios, we assume a 10% COVID-19-related drop in RI coverage in the year 2020. We then linearly interpolate coverage to the year 2030 to investigate two routes to recovery, whereby the immunization agenda (IA2030) targets are reached by 2030 or fall short by 10%. Results: We estimate that falling short of the IA2030 targets by 10% leads to 11.26% fewer fully vaccinated persons (FVPs) and 11.34% more deaths over the years 2020-2030 relative to the noCOVID-19 scenario, whereas, reaching the IA2030 targets reduces these proportions to 5% fewer FVPs and 5.22% more deaths. The impact of the disruption varies across the VPDs with diseases where coverage expands drastically in future years facing a smaller detrimental effect. Conclusion: Overall, our results show that drops in RI coverage could result in more deaths due to VPDs. As the impact of COVID-19-related disruptions is dependent on the vaccination coverage that is achieved over the coming years, the continued efforts of building up coverage and addressing gaps in immunity are vital in the road to recovery.

The Landscape of State and Local School-Located Vaccination Clinics: Practices, Policies, and Lessons Learned for Providing COVID-19 and Routine Vaccinations

For decades, school-located vaccinations clinics (SLVs) have successfully offered influenza and routine childhood immunizations that have contributed to lowering the morbidity and mortality of vaccine-preventable diseases. These SLVs laid the foundation for state and local health departments and school districts to quickly implement SLVs in response to COVID-19. To support school nurses and immunization programs in implementing future SLVs during the COVID-19 pandemic, we explored the landscape of SLVs between August 2019 and late summer 2021 using publicly available information from school and health department websites, news articles reporting on SLVs, and internal documents provided by school nurses and immunization programs who hosted SLVs. Our scan identified variability in the reach, scope, and approach to SLVs, but consistent themes persist such as the importance of partnerships and SLVs as an opportunity to promote equitable access to vaccinations. Useful documents and resources for planning and hosting SLV clinics were compiled into a table. With COVID-19 vaccines now available to all school-age children, SLVs provide an even greater opportunity to improve school and community health. The included resources are designed to provide support for those interested in SLV implementation.

Vaccination Barriers for Adults

The growth of childhood vaccination in India has been increased over the past two decades as >25% of deaths due to infections are prevented with the help of vaccines. Vaccination is also recommended for adults where adult vaccination is mostly ignored in India. In India, childhood vaccination is considered the main priority, WHO has also issued guidelines for childhood vaccination. Generally, adults have less susceptible to traditional infectious agents but the probability of exposure to the infectious agents has increased. SO the problem of adult immunization should be considered. Vaccine-preventable diseases (VPDs) in adults are more neglected. There are many reasons for the causes of the VPDs in adults. These can be prevented by immunization among adults. Each country should provide a proper guideline for adult vaccination. When it comes to India, our country doesn’t have proper guidelines for Adult immunization. As to decrease the morbidity and mortality in the life of a person the vaccine uptake for the immunization must be ensured. This article mainly focuses on the vaccine-preventable disease in India with the role of adult immunizations and the steps to ensure the betterment of the vaccine uptake among the adults.

The correlation and determinants of cost-benefit analysis of measles vaccines among the medical centers providing Expanded Program on Immunization (EPI)

Introduction: Measles is a highly contagious viral infection, vaccine-preventable diseases claim the lives of nearly 30 million people each year around the world, including 17% of children under the age of 5. Methodology: This was a descriptive and cross-sectional investigation. Retrospective data collection was used. We looked at medical centers that provided EPI administrations. Results: Around 8% of the youngsters in the study were found to have measles, according to the health center's records. There are an undetermined number of measles-infected children. Only 12% of those surveyed had received the measles vaccine, and the vast majority (88%) had never received the shot. According to statistical analysis, the study's r square value is r=0.35, which is considered to be an intermediate direct relationship (Wastage of vaccine and total cost). It illustrates that if there is no system of checks and balances on vaccine waste, it could have an impact on the overall cost of the vaccination. Vaccines wastage shows a positive association with Dose wastage x2= 438.8 (p-value 0.002). the breakage of vaccine vial x2 = 369.6 (p-value 0.015), expiration of vaccines x2 = 1068 (p-value 0.006), cold chain maintenance x2 = 79.99 (p-value 0.014) & inventory missing was x2 646.9 (p-value 0.004) showed statistical significance. Conclusion: The elimination of any disease would be contributed by the parallel factors one of that includes also financial state. In less time and cost we can vaccinate the number of children and can achieve universal coverage of immunization.

Prevalence and patterns of adverse events following immunisation among children less than 24 months attending immunisation clinics in Kano, Nigeria

Adverse Events Following Immunisation (AEFI) contribute to child morbidity and mortality as they often lead to low uptake of vaccines with consequent persistence of vaccine-preventable diseases. It is essential to assess the prevalence of AEFIs in northern Nigeria, where misconceptions about immunisation exist. This study assessed the prevalence and pattern of AEFI among children less than 24 months after attending immunisation clinics in Kano, Nigeria. Using a mixed-methods design, adapted intervieweradministered questionnaires were assigned to a cross-section of 384 mother-baby pairs who presented to the immunisation clinics of selected primary healthcare centres (PHCs) within metropolitan Kano. This was followed by six sessions of focus group discussion with a sub-sample of the mothers. Logistic regression and the framework approach were used to analyse the data. The prevalence of AEFI was (43.5%, n=164), and most cases (72.4%, n=273) were mild. Fever was the most common type of AEFI reported (66.5%, n=109) and was higher among infants less than three months (44.5%, n=73). Age of the index child was the only significant predictor of AEFI (OR:0.18, 95% CI: 0.10-0.35). Our study shows that AEFI was common among children less than 24 months old in Kano. We recommend sensitisation and health education of caregivers using valuable communication strategies and sufficient training of immunisation service providers on professional ways to deliver these vaccines safely.

Spatial Clustering of Vaccine Exemptions on the Risk of a Measles Outbreak

OBJECTIVES Areas of increased school-entry vaccination exemptions play a key role in epidemics of vaccine-preventable diseases in the United States. California eliminated nonmedical exemptions in 2016, which increased overall vaccine coverage but also rates of medical exemptions. We examine how spatial clustering of exemptions contributed to measles outbreak potential pre- and postpolicy change. METHODS We modeled measles transmission in an empirically calibrated hypothetical population of youth aged 0 to 17 years in California and compared outbreak sizes under the observed spatial clustering of exemptions in schools pre- and postpolicy change with counterfactual scenarios of no postpolicy change increase in medical exemptions, no clustering of exemptions, and lower population immunization levels. RESULTS The elimination of nonmedical exemptions significantly reduced both average and maximal outbreak sizes, although increases in medical exemptions resulted in more than twice as many infections, on average, than if medical exemptions were maintained at prepolicy change levels. Spatial clustering of nonmedical exemptions provided some initial protection against random introduction of measles infections; however, it ultimately allowed outbreaks with thousands more infections than when exemptions were randomly distributed. The large-scale outbreaks produced by exemption clusters could not be reproduced when exemptions were distributed randomly until population vaccination was lowered by &gt;6 percentage points. CONCLUSIONS Despite the high overall vaccinate rate, the spatial clustering of exemptions in schools was sufficient to threaten local herd immunity and reduce protection from measles outbreaks. Policies strengthening vaccine requirements may be less effective if alternative forms of exemptions (eg, medical) are concentrated in existing low-immunization areas.

Community-Acquired Pneumonia Requiring Hospitalization among French Guianese Children

Community-acquired pneumonia remains a leading cause of hospitalizations among children worldwide. The diagnosis is based on the history, the physical examination results in children with fever plus respiratory signs and symptoms, and chest radiography. The microbiological etiology is confirmed by viral testing and hemocultures. The most likely etiology depends on the age of the child. The features of childhood pneumonia vary between countries and territories. The purpose of this study was to describe the epidemiological characteristics and current microbial ecology of community-acquired pneumonia in children in French Guiana. We performed a retrospective, descriptive, and monocentric study between January 1, 2015, and December 31, 2017, in the pediatric ward of the Cayenne Hospital in French Guiana. The studied population was aged from 0 to 15 years and 3 months and hospitalized for acute community-acquired pneumonia. A total of 415 patients (mean age 3.62 years) were included. A pathogen was identifiable in 22.4% of cases, including bacteria in 61.3%, viruses in 43%, and coinfections in 14%. The main pathogens were respiratory syncytial virus (31.2%), Streptococcus pneumoniae (20.4%), Haemophilus influenzae (11.8%), and Mycoplasma pneumoniae (10.8%). The burden of hospitalization for children with community-acquired pneumonia was highest among less than 2 years, in whom respiratory viruses were the most commonly detected causes of pneumonia. The share of vaccine-preventable diseases (S. pneumoniae, H. influenzae, and influenza) remains high. With the vaccination requirement imposed since 1 January 2018 against pneumococcus, Haemophilus influenzae, and whooping cough and the possibility of practicing multiplex PCR in our hospital, it will be interesting to study the impact of this law enforcement on new child generations and compare these new data to our study.