Vaccinated individuals can contract COVID-19 where they can then bring it home and spread it to unvaccinated family members.
A new study in the U.K. determined that vaccinated people are just as likely to spread the virus in their homes as an unvaccinated person.
The chance of someone spreading it to unvaccinated people in the home is 38%.
The findings have been published in the Lancet Infectious Diseases medical journal.
The research shows the importance of vaccination, according to researchers, and shows that unvaccinated people cannot rely on fully vaccinated people to stay safe.
The efficacy provided my vaccines is against severe infection, but not infections altogether.