Effectiveness of BBIBP-CorV vaccine against severe outcomes of COVID-19 in Abu Dhabi, United Arab Emirates.

The effectiveness of the inactivated BBIBP-CorV vaccine against severe COVID-19 outcomes (hospitalization, critical care admission and death due to COVID-19) and its long-term effectiveness have not been well characterized among the general population. We conducted a retrospective cohort study using electronic health records of 3,147,869 adults, of which 1,099,886 vaccinated individuals were matched, in a 1:1 ratio to 1,099,886 unvaccinated persons. A Cox-proportional hazard model with time varying coefficients was used to assess the vaccine effectiveness adjusting for age, sex, comorbidity, ethnicity, and the calendar month of entry into the study. Our analysis showed that the effectiveness was 79.6% (95% CI, 77.7 to 81.3) against hospitalization, 86% (95% CI, 82.2 to 89.0) against critical care admission, and 84.1% (95% CI, 70.8 to 91.3) against death due to COVID-19. The effectiveness against these severe outcomes declined over time indicating the need for booster doses to increase protection against severe COVID-19 outcomes.

Effects of a rapid peer-based HIV/AIDS educational intervention on knowledge and attitudes of high school students in a high-income Arab country.

INTRODUCTION: In response to low knowledge about HIV and intolerant attitudes toward persons living with HIV among Arab university students, a peer-based educational intervention was developed and impact evaluated on knowledge and attitudes of high school students in 2 of 4 main cities of United Arab Emirates. METHODS: Four small teams of final year medical students, 3 female and 1 male, were trained. Multistage random sampling selected 14 female and 5 male Arab schools, then 56 female and 14 male grade 12 classes in Al Ain and Abu Dhabi. The 90-minute intervention included a factual presentation and 3 attitude workshops. Baseline and postintervention knowledge and attitudes were assessed. Significance was tested by McNemar, Wilcoxon signed rank, and multilevel regression tests. RESULTS: Response was 99.6%, 1398 females and 505 males. Misconceptions about modes of transmission and intolerant attitudes were evident. Mean knowledge score improved from 65% to 82% and attitude 51% to 64%, that is, relative increase 26% (P < 0.0005). Females had slightly lower baseline knowledge than males but showed greater improvement in knowledge and attitudes (P < 0.0005) CONCLUSIONS: Grade 12 students' knowledge about HIV/AIDS was inadequate and attitudes stigmatizing. Peer-based knowledge workshops were effective, especially among females. Concise integrated teaching and workshops designed to address key knowledge and attitudinal deficiencies can be highly effective.