Filling COVID-19 Vaccine Data Gaps Will Take Time

Timeline for getting data on COVID-19 vaccines ability to prevent transmission is likely pushed due to the decision not to proceed with a NIH study on the topic. CDC warns that it will take more time than people expect to get other key data points filled in and vaccine regimen plans shouldn’t change without such data.

The US government’s decision against funding a clinical trial to test whether currently available COVID-19 vaccines prevent transmission of SARS-CoV-2 and asymptomatic infections is emblematic of the challenges of filling in missing data gaps on COVID-19 vaccines post-emergency use authorization.

Plugging a variety of data holes could make stopping the pandemic and restoring the economy easier by permitting vaccination of broader populations or by providing assurances of how long the...

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