US infectious diseases expert, Dr Anthony Fauci, holds up the scroll he received from the Royal College of Physicians of Ireland (RCPI) as he was conferred with his Honorary Fellowship

Countries “can’t just completely turn off all public health measures” as more and more people are vaccinated against Covid-19, top US infectious disea(...)

Dr Anthony Fauci  and former president Donald Trump during the daily White House coronavirus briefing  in April last year. Photograph: Doug Mills/The New York Times

For almost 40 years, Dr Anthony Fauci has held two jobs. As director of the US National Institute of Allergy and Infectious Diseases, he has run one o(...)

A sign warns motorists of turkeys crossing Highway 86 near The Good Samaritan Society care center. The first person in the United States known to be infected with a new Covid-19 variant was a Colorado National Guardsman who had been sent to help out at the nursing home struggling with an outbreak. Photograph: David Zalubowski/AP Photo

The first reported US case of the Covid-19 variant that has been seen in the United Kingdom has been discovered in Colorado, Governor Jared Polis anno(...)

An outside panel of experts convened by the FDA voted on Thursday to recommend authorisation of the Pfizer vaccine.  Photograph: Joel Saget/AFP via Getty Images

The Food and Drug Administration is “very close” to granting emergency use authorisation for a coronavirus vaccine developed by Pfizer in partnership (...)

 Anthony Fauci: “We have not yet seen the post-Thanksgiving peak. That’s the concerning thing, because the numbers in and of themselves are alarming…” Photograph: Getty Images

The US is continuing to see record levels of coronavirus infections, with more than 217,000 new cases reported on Thursday, prompting fear of a post-T(...)

Anthony Fauci: The FDA ‘really scrutinises the data very carefully to guarantee to the American public that this is a safe and efficacious vaccine’. Photograph:  Brendan Smialowski/AFP via Getty Images

Politicians, health professionals and commentators in Europe and the US have questioned Britain’s decision to fast-track approval of a coronavirus vac(...)

New York governor Andrew Cuomo speaks at the Riverside Church in New York. Photograph: Gregg Vigliotti/The New York Times

The US supreme court has ruled against coronavirus restrictions imposed on religious services by New York governor Andrew Cuomo, in a ruling he called(...)

A vial of BNT162, the Covid-19 vaccine candidate developed by Pfizer and BioNTech. Photograph:BioNTech/The New York Times.

The announcement by pharmaceutical company Pfizer and tech company BioNTech that their coronavirus vaccine works to prevent Covid-19 has been welcomed(...)

World Health Organization (WHO) director-general Tedros Adhanom Ghebreyesus. Photograph: Fabrice Coffrini/AFP via Getty

The director-general of the World Health Organisation has said he is isolating after being identified as a contact of someone who tested positive for (...)

Pitkin County volunteer election official John Ortega (left), guides a voter as he drops his ballot after voting in person on the first day of early voting at the Aspen Jewish Community Center earlier this week. Photograph: Kelsey Brunner/The Aspen Times/AP

More than 84,000 people were diagnosed with Covid-19 across the United States on Friday, according to a Reuters tally, a record one-day increase in in(...)

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