It is possible to catch two Covid variants at the same time, experts are warning after seeing a double infection in a 90-year-old woman who became sick with the Alpha and Beta types first identified in the UK and South Africa.
Indian Prime Minister Narendra Modi has said that all adults in India will now get free vaccines.
Sniffer dogs could contribute to efforts to prevent the spread of Covid as society reopens, according to scientists.
It took 31-year-old Sneha Marathe half a day to book an appointment online for a Covid vaccine.
President Vladimir Putin has heralded Russia's vaccine offering as "reliable as a Kalashnikov assault rifle".
The US, South Africa and European Union will temporarily stop the rollout of the Johnson & Johnson (J&J) Covid jab, after reports of rare blood clotting.
The NHS in England was ill-prepared for the seismic shock of the Covid pandemic, a hospital chief has said.
UK scientists have discovered a key inflammatory protein that rises in the blood of patients with severe Covid-19.
Covid-19: Vaccine offers for all those aged 56 or over
Germany's vaccine commission has approved the use of the Oxford-AstraZeneca jab in people aged over 65.
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