Coronavirus vaccines can reduce disease severity and fatality, but the emergence of new strains has raised questions about their effectiveness and future vaccination strategy. Some vaccine makers are rolling out variant-specific boosters to head off the Omicron surge, while others are developing pan-coronavirus vaccines that will hopefully offer protection against all variants.
Yet, only some countries have access to vaccine technology and supply. Using a global database, infectious disease experts in Asia and Latin America conducted a review of more than 50 real-world studies, which found that current booster shots are effective in preventing severe disease and death.
