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25 votes
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Loss of taste and smell during a SARS-CoV-2 infection

In France the loss of taste and smell (la perte du goût et de l'odorat) is considered as one of the key symptoms of a SARS-CoV-2 infection (although googling shows that it is considered less definitiv …
Roger V.'s user avatar
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2 votes
0 answers
68 views

Why do some vaccines lose their efficacy with time?

Why do some vaccines lose with time their efficacy? The two obvious examples that I have in mind are influenza and tetanus. The former case is clear, as influenza virus undergoes frequent gene reshuff …
Roger V.'s user avatar
  • 3,872