Johnson & Johnson’s Coronavirus Vaccine Is 72 Percent Effective, But Offers Weaker Protection Against New Strains

Johnson & Johnson announced on Friday that its coronavirus vaccine was 72% effective in combating COVID-19, but only 57% effective against a novel South African strain.

While slightly less effective than Pfizer and Moderna’s vaccines, which were both approved by the FDA in December, Johnson & Johnson’s vaccines provides significant distribution advantages that could be crucial in the nation’s fight against the virus. Unlike Pfizer and Moderna, Pfizer’s vaccine is just one shot, and can be stored in refrigerators instead of freezers.

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