全民免疫泡汤?变异无效不打第二针

JUST IN: US to begin sharing up to 60 million doses of Covid-19 #vaccines around the world.

As Americans are vaccinated, we can also be proud of what our country is doing to help others get protected too. https://t.co/AufhMtOcCH

— Samantha Power (@SamanthaJPower) April 26, 2021

The US has tens of millions of AstraZeneca's vaccine stockpiled. Because President Biden's officials now feel confident the US has enough doses for its population, they will begin to distribute it to other countries pending a safety review. https://t.co/98jmrLXv6y

— CNN International (@CNNi) April 27, 2021

Millions of Americans are skipping the second dose of their Covid vaccines. State officials are rushing to keep that number from growing even more. https://t.co/A2aOy3RNg4

— The New York Times (@nytimes) April 26, 2021