Dr. Jane Newburger speaks to Sierra Trudeau, and her mother, Heather at Boston Children’ss Hospital. Photograph: Maddie Malhotra/The New York Times

Will Grogan stared blankly at his biology classwork. It was material he had mastered the day before, but it looked utterly unfamiliar. “I don’t know (...)

The difficulty for vaccine makers is that even clinical trials involving 30,000 people – such as AstraZeneca’s current phase 3 trial – may not pick up rare, but potentially devastating, reactions. Photograph: iStock

When AstraZeneca confirmed on Tuesday evening that it had temporarily halted trials of its coronavirus vaccine, the news disconcerted millions around(...)

US pharma companies Moderna and Pfizer, with its German partner BioNTech have launched major Phase III trials of their Covid vaccine candidates. Photograph: Hans Pennink/AP

German biotech BioNTech and US drugmaker Pfizer will begin a pivotal global study of 30,000 people to evaluate their lead Covid-19 vaccine candidate. (...)

Vehicles line up at a drive-through testing site for coronavirus in Dallas. Photograph: Nitashia Johnson/The New York Times

US federal health officials are already trying to decide who will get the first doses of any effective coronavirus vaccines, which could be on the mar(...)

 Dr Francis Collins: one of America’s top scientists,  he insists that “belief in God can be an entirely rational choice, and that the principles of faith are, in fact, complementary with the principles of science”.    Photograph:    Patrick McDermott/ Getty Images

It was a relief when travel restrictions were eased, and it was possible to get out and enjoy the countryside. Many, including those who would not reg(...)

Merck intends to shoulder the cost of scaling up production of the vaccines before they have been proven to work

Merck, which has largely kept to the sidelines of the race for Covid-19 treatments, said it was buying Austrian vaccine maker Themis Bioscience and wo(...)

‘It truly is a remarkable time of hope and progress in CF care in Ireland and worldwide.’ Photograph: Science Photo Library

A groundbreaking new therapy to treat the vast majority of people with cystic fibrosis could be available in Ireland as early as next summer, accordin(...)