Johnson & Johnson says its single-shot COVID-19 vaccine is effective in preventing severe cases of COVID-19, but not as well as other two-shot variants of the vaccine that are already on the market.
A fourth coronavirus vaccine could be approved for use in the UK within weeks as late-stage trials suggested it was 89% effective in preventing Covid-19.
The UK has secured 60 million doses of the..
Despite a steady decline in COVID-19 cases in Santa Clara county as well as the rollout of the vaccine, Dr. Anthony Fauci warned Thursday the pandemic could get worse as new mutant variants threaten..
Researching COVID-19 Variants & Vaccine Efficiency
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