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If they come out with a Covid vaccine, how effective will it be?

Will it be like the flu vaccine? Many take it and still catch the flu.
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smiler2012 · 56-60
professorplum77 i can understand you are sceptical about an injection for corona virus but they will be tried and test by expert scientists in this area before it is released for human use
ProfessorPlum77 · 70-79, MVIP
@smiler2012 I am just tired of all of the changing narratives, guidelines, political infighting, etc.