- Study suggests Johnson & Johnson vaccine less effective against Delta variantNew York Post
- How effective are COVID-19 vaccines against variants?Good Morning America
- J.&J. Vaccine May Be Less Effective Against Delta, Study SuggestsThe New York Times
- What we’re seeing with Covid is not surprising: Dr. Vin GuptaCNBC Television
- COVID-19 Statistics | July 20, 2021Lost Coast Outpost
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