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Health

How good are the coronavirus vaccines at blocking transmission?

By Michael Le Page

13 April 2021

People sit around a table at a business meeting

People meeting in a conference room before the covid-19 pandemic

10’000 Hours/Getty Images

To halt covid-19 in its tracks, we need vaccines that stop the virus spreading as well as preventing people becoming seriously ill. Until now it was unclear how effective the vaccines are at doing this, but with vaccine roll-outs well under way, we are starting to get some answers.

The good news is that mRNA vaccines like Pfizer/BioNTech appear to be around 90 per cent effective at blocking transmission. The bad news is that as there are no plans to vaccinate children under 16 anytime soon,…

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