Examining new infections in Germany, researchers found that the rate of cases among fully vaccinated individuals aged 60 and older has risen from 16.9% in July to 58.9% in October.
Offering a clear assessment that fully vaccinated people are increasingly becoming the source of Covid transmission, the study identified a similar situation in the UK. Throughout Britain, the number of household contacts exposed to unvaccinated cases (23%) was slightly lower than the number exposed to vaccinated individuals (25%).
In the space of three weeks in Britain, 100 Covid cases were reported among individuals who are 60 or older. Out of those infections, 89.7% of people were fully vaccinated, while 3.4% were unvaccinated.
More concerning for researchers, in Israel, an outbreak that infected multiple healthcare workers and patients, as well as their family members, came from a fully vaccinated hospital patient.