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Third Covid jab advised for most vulnerable 1%
People over the age of 12 with severely weakened immune systems should have a third vaccine dose to top up protection against Covid-19, experts say.
How long does immunisation last with COVID-19 vaccines?
A lot of people are asking this question, and several studies have been done on the period of time antibody levels remain stable for each
Previous Covid infection may not offer long-term protection, study finds
Research found marked differences in immune response of medical staff six months after contracting virus Previous infection with coronavirus does not necessarily protect against