RESUMO
Background: Though vaccines are generally considered extremely safe and effective, they have been associated with some serious adverse events following immunization (AEFIs). AEFIs might be related to either the vaccine, immunization error, anxiety related to immunization, and/or coincidental events. If they are not reported and investigated in timely fashion, they can create rumors and confidence gaps. In the last few years, reporting AEFIs in the Central Region of Eritrea, compared to other regions, has been found to be very low, with the root cause for this variation unknown, making intervention strategies challenging. This study was conducted to assess nurse practitioners' knowledge and perceptions on AEFI surveillance and barriers to reporting in the region. Methods: An analytical cross-sectional study was conducted among all nurse practitioners who were directly or indirectly involved in immunization services working in all health facilities of the region. Data were collected between October 2019 and February 2020 using an interview-based questionnaire. Percentages and medians (IQR) were used as descriptive statistics, and Mann-Whitney and Kruskal-Wallis tests were used as inferential tools. Results: A total of 130 respondents with a median age of 40 (IQR 23) years were included in the study. The overall median (IQR) knowledge score of the respondents on AEFI surveillance was 87.50 (19) out of 100. Furthermore, median (IQR) comprehensive perception score was 70 (20) out of 100 (range 40-95). Shortage of motivation and not knowing how to report were identified as the main barriers to reporting AEFIs. Conclusion: Knowledge and perceptions of nurse practitioners in the Central Region on AEFI surveillance were generally encouraging. They should however need to be further trained on the basics of AEFI surveillance to bridge the identified barriers to reporting.
RESUMO
INTRODUCTION: The Expanded Program on Immunisation (EPI) has been operational in Eritrea since 1980. Eritrea has endorsed the resolution of the Regional Committee of the World Health Organisation African region, committing to a measles elimination goal for 2020 in the African Region. The country is implementing the recommended strategies. METHODS: We reviewed administrative coverage and WHO UNICEF coverage estimates for Diphtheria-Pertussis-Tetanus (DPT) and measles routine vaccination, as well as for measles supplemental immunization activities. We reviewed national surveillance performance and analyzed the epidemiological trends of measles as reported in the case-based surveillance database. RESULTS: Eritrea has maintained more than 90% coverage with the first dose of measles vaccine at national level since 2001 and 88% MCV2 coverage from 2015 - 2017 according to the WHO-UNICEF coverage estimates. Since 2011, the country has not met the surveillance performance target of at least 80% districts reporting suspected measles cases with blood specimen. Measles incidence was between 16.8 - 24.7 cases per million population in the period 2015 - 2018. The mean and median age of confirmed measles cases was more than 10 years in 8 of the 14 years covered by the analysis. In 2017, Eritrea reported 1,199 cases of measles which differs significantly from the 185 suspected cases in the case based surveillance database for the same year. Eritrea has maintained high coverage for MCV1 and MCV2 and made progress towards measles elimination. However, the country has gaps in surveillance performance which may mask the true incidence of measles. CONCLUSION: In order to attain elimination of measles, Eritrea needs to implement measures to improve surveillance quality, to conduct regular risk assessment and implement targeted measures to close immunity gaps. In addition, setting up a national committee for the verification of measles elimination will help the country document progress and also to highlight and advocate for addressing issues related to data quality and performance gaps.