The Delta variant of the SARS-CoV-2 virus, that causes Covid-19, is unable to evade the antibodies generated by vaccination, according to a lab study. The findings, published in the journal Immunity,...

A longer gap between first and second doses of the Pfizer-BioNTech COVID-19 vaccine generates strong antibody and T cell immune responses, UK researchers have found. The study, led by the University ...

Representatives of Pfizer met privately with senior US scientists and regulators on Monday to press their case for swift authorisation of coronavirus booster vaccines, amid growing public confusion ab...

As the Delta variant sweeps the world, researchers are tracking how well vaccines protect against it — and getting different answers. In Britain, researchers reported in May that two doses of t...

People who receive Covid-19 vaccines by Pfizer and Moderna are up to 91 per cent less likely to develop the disease, according to a US study which also suggests that the preventives reduce the severit...

Teenagers keep all sorts of secrets from their parents. Drinking. Sex. Lousy grades. But the secret that Elizabeth, 17, a rising high-school senior, keeps from hers is new to the buffet of adolescent...

“Every day, we get 10 to 15 messages and inquiries, saying, ‘What does this mean? How does this impact me?’” said Sudhanshu Kaushik, 26, who dropped out of his MBA at New York ...

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Federal regulators have told Johnson & Johnson that about 60 million doses of its coronavirus vaccine produced at a troubled Baltimore factory cannot be used because of possible contamination, acc...

People receiving the Covid vaccine made by Oxford-AstraZeneca had a slightly increased risk of a bleeding disorder, and possibly other rare blood problems, researchers reported on Wednesday. The find...