Vaccination

What we know about COVID-19 vaccines and side effects

The distribution of the first vaccines for the coronavirus has raised hopes that the end of the pandemic may be in sight, but it has also sparked some concern about side effects.

Diseases, Conditions, Syndromes

S.Africa virus strain poses 're-infection risk': study

The coronavirus variant detected in South Africa poses a "significant re-infection risk" and raises concerns over vaccine effectiveness, according to preliminary research Wednesday, as separate studies suggested the British ...

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