COVID-19 vaccines and decreased transmission of SARS-CoV-2

A massive COVID-19 vaccination campaign is underway worldwide. Epidemiological data from studies indicate excellent efficacy and safety profile for COVID-19 vaccines. However, there are few data from studies on the effect of decreasing the probability of infection of vaccinated subjects compared to unvaccinated subjects. In this short communication, we describe some evidence on this important and current topic providing useful personal reflections.

Automated summary

A massive global COVID-19 vaccination campaign is ongoing, with studies showing excellent efficacy and safety of the vaccines. However, there is a lack of data on the effect of decreasing infection probability among vaccinated individuals compared to unvaccinated ones.