Vaccination

China's bet on homegrown mRNA vaccines holds back nation

China is trying to navigate its biggest coronavirus outbreak without a tool it could have adopted many months ago, the kind of vaccines that have proven to offer the best protection against the worst outcomes from COVID-19.

Vaccination

Pfizer says 3 COVID shots protect children under 5

Three doses of Pfizer's COVID-19 vaccine offer strong protection for children younger than 5, the company announced Monday, another step toward shots for the littlest kids possibly beginning in early summer.

Vaccination

Sweden: 5th COVID-19 shot to people over 65, pregnant women

Sweden is recommending a fifth COVID-19 vaccine dose for people with an increased risk of becoming seriously ill, including pregnant women and anyone aged 65 and over, authorities said Tuesday, adding that the country must ...