News Alert: Two-dose version of Johnson & Johnson shot 94% effective against Covid-19, study finds
  A two-dose version of Johnson & Johnson's coronavirus vaccine provides 94% protection against symptomatic infection, the company said Tuesday -- making a two-dose regimen of J&J's Janssen vaccine comparable to a two-dose regimen of Moderna's or Pfizer's. Plus, the company said, adding a booster dose to a single shot of the vaccine raised immunity even more, and should also protect people strongly against infection.  CNN BREAKING NEWS You are receiving this newsletter because you've signed up to receive CNN Breaking News alerts.
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