Fact Check By: Lior Rennert, Ph.D., Lead Public Health Strategist and Biostatistician, Clemson University, Clemson University

Truthfulness: False


A tweet that has been shared by thousands of people reads, "The vaccine doesn't stop you catching Covid and passing it on. It stops you getting seriously ill. Therefore the unvaccinated are not putting you at risk any more than other vaccinated people. Why is this so hard for some to understand?"

Claim Publisher and Date: Oliver Smith on 2021-09-08

This tweet is not factually correct. While it is true that the vaccines are effective at prevention of serious illness, many studies show that they are also effective at preventing asymptomatic infection. That is, vaccines are effective at preventing you from catching COVID-19, and therefore reduce the risk that you transmit to others. On the other hand, unvaccinated individuals are more likely to both catch and spread COVID-19. Therefore, unvaccinated individuals are a greater threat to both vaccinated and unvaccinated individuals. 

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