Johnson & Johnson Two dose vaccines 94% effective against Covid-19, clinical study finds

Johnson & Johnson's coronavirus vaccine provides 94% protection against symptomatic infection, the company said Tuesday - making two vaccine johnson and johnson similar to the dosage of two doses of Moderna or Pfizer.

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Also, the company said, adding a dose to assist with a single shot of the highest-dose vaccine, and should also significantly protect people from infection.

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The company released further data from three studies looking at various aspects of its Janssen vaccine, and said that, when combined, it shows that the vaccine or vaccination provided long-lasting protection that could be enhanced with additional shots.