A study on COVID-19 vaccine effectiveness has been published after being blocked from a government health journal.

The findings suggest that Covid vaccines reduced the likelihood of severe illness last fall and winter.

Bhattacharya attacked study's test-negative design, a staple of vaccine effectiveness research

A study on COVID-19 vaccine effectiveness has been published after being blocked from a government health journal.

A study on COVID-19 vaccine effectiveness has finally been published after being blocked from a government health journal

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Covid-19 study approach, called "test-negative design", looks at people who were admitted to hospitals or visited emergency rooms with respiratory illnesses.

A study looking at the effectiveness of the COVID-19 vaccine was published after it was blocked from being included in a weekly report from the federal government.