A health worker injects a dose of the AstraZeneca Covid-19 vaccine at Casernes Hospital in Barcelona, Spain. Photograph: Alejandro Garcia/EPA

AstraZeneca has reported a slightly lower efficacy rate for its Covid-19 vaccine after the results of an US clinical trial were criticised as outdated(...)

Photograph: iStock

Johnson & Johnson said on Tuesday it would take a few days at least to hear from a safety monitoring panel about its review of the company’s late-(...)

The standard prescription for flu is to stay home and rest, drink plenty of fluids, and keep pain and fever under control with over-the-counter drugs (...)