Breaking News: A new, two-dose Covid vaccine showed 100% efficacy against severe disease, and may be an effective booster for other shots, its makers said.

View in browser | nytimes.com   BREAKING NEWS A new, two-dose Covid vaccine showed 100% efficacy against severe disease, and may be an effective booster for other shots, its makers said. Wednesday, February 23, 2022 10:35 AM EST The two Europe-based pharmaceutical companies that made the vaccine, Sanofi and GSK, said they intend to submit it for authorization to regulatory authorities in the United States and Europe. Read the latest   ADVERTISEMENT You received this email because you signed up for NYTimes.com's Breaking News Alerts. To stop receiving these emails, unsubscribe or manage your email preferences. Subscribe to the Times Get the NYT app Change Your Email Privacy Policy Contact Advertise California Notice The New York Times Company, 620 Eighth Avenue, New York, NY 10018