J&J says its Covid vaccine is 66% effective, but the single shot may fall short against variants

[春夏秋鼕]

https://www.cnbc.com/2021/01/29/covid-vaccine-jjs-one-shot-drug-is-72percent-in-the-us-but-less-effective-elsewhere.html

• Johnson & Johnson said its sungle-dose coronavirus vaccine was 66% effective overall in protecting against Covid-19.
• The vaccine, however, was less potent in other regions, it said.
• J&J said the vaccine was 85% effective in preventing severe disease four weeks after vaccination in all adults.
• It offered complete protection against Covid-related hospitalizations four weeks after vaccination, the company said.