Health worker recommended vaccination rates among medical students in Brazil

[Evaluation of the scenario of hesitancy in vaccines against seasonal influenza among public school teachers in Teresina, Piauí State, Brazil, in COVID-19 times]

The objectives of this study were to evaluate the frequency of vaccine hesitancy against seasonal influenza and to analyze the associated factors among teachers in the municipal school system of Teresina, Piauí State, Brazil. An online questionnaire was applied, adapted from the Health Belief Model, and 449 teachers were included. Of the public interviewed, most live in the capital Teresina, (373, 83.26%), are women (360, 80.54%), aged between 23 and 50 years (306, 81.38%), born in the state of Piauí (382, 86.82%), brown (289, 64.65%), married (254, 56.70%) and with a lato sensu graduate degree (327, 72.99%). In total, 33.18% were considered hesitant, and hesitancy was defined as teachers who were not vaccinated against influenza in 2020. The variables associated with hesitancy in this group were: not being vaccinated against influenza in 2019, the flu vaccine is not convenient, there are many risks associated with it, and concern about reactions to the flu vaccine, the new coronavirus pandemic changed the relationship with the act of vaccinating and greater adherence to the vaccine after hearing information about its benefits in the media. However, in the regression analysis, only the variables "not being vaccinated against influenza in 2019" and "the change in behavior after the pandemic" were significant. Vaccines continue to be the main method of prevention and control of a series of diseases related to influenza viruses, requiring greater adherence by teachers, a priority population that is in constant contact with students from different backgrounds, representing an important source of virus dissemination.

Vaccine Confidence and Coverage among Medical Students at a Federal University in Brazil

BACKGROUND

Declining vaccination coverage (VC) and vaccine hesitancy among medical students are global challenges. These challenges reflect individual and logistical barriers to a sufficient adherence toward essential vaccines for healthcare professionals, as well as presenting a need for educational strategies during undergraduate training.

METHODS

This is a prospective study for evaluating VC rates, sociodemographic associations, and the vaccine confidence among medical students at a federal university in Brazil. The data collection included questionnaires and individual analyses of the participants' vaccination records.

RESULTS

A total of 237 medical students from all six years of an undergraduate program participated, of whom 124 (52.3%) had a vaccination record. Although the majority considered the vaccines to be "Completely Safe" (86.9%), the VC rates for complete vaccination schedules were relatively low, ranging from 87.9% (hepatitis B vaccine) to 3.2% (meningococcal B vaccine), including the vaccines from the National Immunization Program (NIP) and the private sector. Higher VC rates were found to occur among students in the final years of their undergraduate studies, in those from families with higher monthly incomes, and those from private secondary schools.

CONCLUSIONS

Given the low VC rates among medical students, other factors in addition to vaccine confidence may be determinants, thus highlighting the importance of reviewing policies for the inclusion of priority groups in the NIP and in implementing educational interventions during undergraduate training.

Hepatitis B eradication: vaccine as a key player

OBJECTIVE

Despite the availability of a highly effective and safe vaccine against hepatitis B virus (HBV) infection for 40 years, still almost 300 million persons are estimated to be chronically infected by this virus worldwide. The World Health Organization (WHO) has proposed a plan for hepatitis elimination by 2030. However, several factors, such as the reduction and limitation in vaccination campaigns or vaccine hesitancy (VH) in some regions of the World, might have played a role in limiting the worldwide coverage of hepatitis B prophylaxis. This review aims to describe which factors, such as VH, may be hampering the WHO 2030 goal for hepatitis B eradication.

METHODS

The review describes the development and characteristics of the HBV vaccine, from the first plasma-derived to the recombinant one. Eventual limitations in its effectiveness and particularly VH were reviewed.

RESULTS

The apparent pitfalls of the HBV vaccine, such as long-term effectiveness, vaccine-escape mutants, and adverse effects, were proven not to be a concern for this vaccine. However, VH persists and was even intensified by the COVID-19 pandemic.

CONCLUSIONS

Many barriers still exist, such as vaccine availability, lack of awareness of the benefits of HBV vaccination, and VH. HBV VH seems to be eventually overcome in many settings with active education campaigns and information, stressing the importance of developing these strategies to achieve the 2030 goal of the WHO.

Does COVID-19 have an impact on influenza vaccine knowledge, attitude and practice among medical students: a 2-year prospective cohort study

OBJECTIVES

To explore the main factors affecting the knowledge, attitude and practice about influenza and influenza vaccine as well as the intention to receive influenza vaccination among the same group of medical students before (2019) and after (2021) the COVID-19 outbreak.

DESIGN

A population-based prospective cohort study.

SETTING

A longitudinal cohort study of a selected medical school in Chongqing, China, which ran from 2019 to 2021.

PARTICIPANTS

A total of 803 medical students participated in the study in 2019 and only 484 students responded in 2021. The response rate for our survey was only 60.27% due to graduation, emails being abandoned, etc. RESULTS: The influenza vaccination rate of students at this medical school was 6.7% in 2019, compared with 25.8% in 2021. The awareness rate of medical students about influenza and influenza vaccine was 82.8% in 2019 and 86% in 2021, and there was no significantly statistical difference between the 2 years (p=0.134); the number of medical students with supportive attitude towards influenza vaccine was 95.1% in 2019 and 97.1% in 2021, and there was no statistically significant difference between the 2 years (p=0.078); the number of students who actively learnt about knowledge related to influenza vaccine rose from 183 (22.8%) in 2019 to 195 (40.3%) in 2021.

CONCLUSIONS

The COVID-19 outbreak prompted an increase in influenza vaccination rates among medical students in Chongqing, with almost all students (96.0%) believing that the spread of COVID-19 promoted their knowledge about influenza and influenza vaccine, and the vast majority (74.8%) believing that the spread of COVID-19 promoted their willingness to receive influenza vaccine.