A vaccine breakthrough infection happens when a fully vaccinated person gets infected with COVID-19. People with vaccine breakthrough infections may spread COVID-19 to others.

Can you spread COVID-19 if you are vaccinated?

Vaccinated People Can Transmit the Coronavirus, but It's Still More Likely If You're Unvaccinated. COVID-19 vaccines continue to protect against severe illness but do not entirely block transmission. Fully vaccinated people are also less likely to contract the coronavirus than unvaccinated people.

Can you get reinfected with COVID-19?

Based on what we know from similar viruses, some reinfections are expected. We are still learning more about COVID-19.