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When people were given a half dose of the AstraZeneca vaccine followed by a full dose at least a month later its efficacy rose to 90%. File photograph: Getty

The AstraZeneca Covid-19 vaccine developed with scientists at Oxford University continues to be in the news for all the wrong reasons. From being in(...)

Vaccines from Chinese pharmaceutical company Sinopharm being unloaded in Budapest, Hungary. Photograph: Zsolt Szigetvary/EPA

Czech and Hungarian leaders have visited Israel to discuss joint efforts to fight Covid-19 and learn from its successful inoculation programme, as a s(...)

With more classes open now, more of the cases among children will inevitably be picked up in schools, Nphet official Prof Philip Nolan pointed out. Photograph: Alan Betson

Six outbreaks in schools have occurred in the past week, involved fewer than 10 cases, according to the National Public Health Emergency Team. With m(...)

Johnson & Johnson have committed to supplying the EU with over 200 million doses of vaccine. File photograph: Justin Tallis/ / AFP via Getty Images

Johnson & Johnson has told the European Union it is facing supply issues that may complicate plans to deliver 55 million doses of its Covid-19 vac(...)

Icon chief executive Steve Cutler

In the middle of a pandemic, everyone just assumed companies running clinical trials on vaccines had more than enough to occupy them. The pharma compa(...)

Ultra-Orthodox Jews in costumes during the Purim celebration in Mea Shearim in Jerusalem on February 28th.  Israel is easing coronavirus restrictions. Photograph: Abir Sultan

Israel’s world-leading coronavirus vaccination programme will not bring it to “herd immunity” in coming months because children are not yet inoculated(...)

US president Joe Biden speaks in the State Dining Room of the White House in Washington, DC on Tuesday. Photograph: Doug Mills

The United States will have enough Covid-19 vaccine for every American adult by the end of May, US president Joe Biden said on Tuesday after Merck &am(...)

Men were more likely to report that they would take the vaccine next week, with 92.5 per cent of male respondents saying yes, compared with 81.6 per cent of female respondents. Photograph: EPA/BioNTech SE/Handout

The vast majority of people would be willing to receive the Covid-19 vaccine next week if they could, but women are four times more likely to decline (...)

Pfizer-BioNTech vaccine: the two injections must be given 21 days apart. Photograph: Liam McBurney/PA Wire

The Pfizer/BioNTech vaccine may be less effective in people with obesity, data suggests. Italian researchers have discovered that healthcare workers (...)

US president Joe Biden speaks during an event commemorating the 50 millionth Covid-19 vaccine shot in the US on Thursday. Photograph: Doug Mills/The New York Times/Bloomberg

The US government on Saturday authorised Johnson & Johnson’s single-dose Covid-19 vaccine, enabling millions more Americans to be vaccinated in th(...)

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