U.S. moves to approve booster shots despite minimal evidence

This week, the federal government announced that the U.S. intends to provide third vaccine doses to all Americans who received the Pfizer or Moderna vaccines. This booster shot distribution will start in September, with adults becoming eligible once they hit eight months after their second shot. Many epidemiologists, vaccine experts, global health experts, and other scientists have criticized the decision.

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Breakthrough case reporting: Once again, outside researchers do the CDC’s job

Now, Delta is causing the vast majority of cases—and the CDC still isn’t reporting on non-severe breakthroughs. As a result, entities outside the federal government are once again compiling data from states in order to fill in gaps left by the national public health agency. On Friday, both Bloomberg and NBC published breakthrough case analyses.

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Breakthrough cases: What we know right now

While epidemiologists may consider any new outbreak a possible source of new variants, one key way to monitor the virus/variant race is by analyzing breakthrough cases—those infections that occur after someone has been fully vaccinated. Here’s how states and the CDC are tracking these cases now, and what we know about vaccine protection against the variants.

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How to talk about breakthrough cases

A lot of journalists, especially those who aren’t familiar with the science/health beat, may be inclined to publish news of breakthrough cases as surprising or monumental. In fact, these cases—referring to a COVID-19 infection that occurs after someone has been fully vaccinated—are entirely normal, yet incredibly rare. But we still need to pursue data on them.

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