Booster doses of mRNA vaccines provided strong protection against hospitalization and death from COVID-19 in Qatar, though breakthrough SARS-CoV-2 infections were greater for the omicron variant compared with the delta variant, according to a study by investigators at Weill Cornell Medicine—Qatar.
HIV epidemics are emerging and growing among female sex workers and their male clients in multiple countries in the Middle East and North Africa, and few of these epidemics have already reached their peak.
