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US health agency says Covid-19 vaccine benefits still outweigh small risk of rare condition in adolescents
‘Gain of function’ experiments that make viruses more deadly should be more tightly controlled, say some scientists
Joe Biden hails latest move to relax guidance as a ‘great milestone’ in fight against pandemic
US public health agency relaxes social-distancing guidelines as more adults get their jabs
Regulators conclude benefits of the single-shot jab outweigh the risk of rare blood clots
Guidance that jab should not be used remains in place after US meeting of experts
Recommendation to halt use of one-dose jab in US risks stoking hesitancy towards other shots
CDC and FDA recommendation comes after reports of ‘rare and severe’ blood clots
Agency director’s comments mark rare political intervention after US state seeks more vaccines
Shift in guidelines could boost airlines, leisure and hospitality
Rochelle Walensky says she senses ‘impending doom’ in Covid-19 trends despite inoculation gains
Researchers think vaccines reduce transmission but are still trying to understand by how much
Public health officials loosen guidelines for those fully inoculated against virus
Public health authority recommendations come as Biden pushes to fulfil campaign pledge
Capacity has lagged behind UK, blinding the country to risk of new mutations, say experts
Health officials urge more precautions to curb spread as Biden lays out plans for vaccine push
More states follow Florida in making anyone over 65 eligible for a jab but bottlenecks may thwart their aims
Health officials try to clamp down as new variants raise alarms about the virus’s spread
New York to begin administering jabs to over-65s in accordance with new CDC guidance
Officials say US states have used only a fifth of the doses they were given
Rochelle Walensky has no experience in US government but has earned medical colleagues’ respect
Healthcare workers and care-home residents would be initial recipients under guidance
Millions travel for the holiday despite ‘dramatic’ spike in coronavirus cases and deaths
International Edition