If you have already had COVID-19, do you still need both doses of the vaccine? Do these vaccines protect you against infection? Do they protect us against variants? World Health Organisation's Dr Katherine O'Brien answers these questions in "Science In 5" this week. [Credit: World Health Organization (WHO)] | NDTV

6.6M views · 35K reactions | With vaccines now rolling out, protection against the COVID-19 virus is spreading. But protecting one country has its limits when others are not protected. Through COVAX we can fairly distribute vaccines to all countries to protect ourselves locally. Vaccine doses must be shared globally and immediately. No one is safe until everyone is safe! | World Health Organization (WHO) | Facebook

72K views · 229 reactions | World Health Organization Azerbaijan...