Colin Powell from COVID-19 reveals not the failure of vaccines – but the inability of his fragile immune system to protect him from those who are unvaccinated, health care experts said Monday.

“No matter how good our vaccines – if we have a raging forest fire of infections among unvaccinated It will spill over and kill vulnerable vaccinated folks,” wrote Dr. Ashish Jha, dean of the Brown University School of Public Health, on Twitter.

As long as some people remain unvaccinated, the virus continues to circulate – and can cause infection in the most vulnerable.

Infections among vaccinated people are much less common than infections among unvaccinated people — and when these so-called “breakthrough” cases occur, they tend to be milder.

For these vulnerable people, vaccines are helpful.

Additionally, a very small group of people who want to be vaccinated against COVID-19 but cannot, for medical reasons.

These include people with a history of severe allergic reaction to an ingredient in the vaccines.

“All vulnerable people rely on the rest of their community to be vaccinated to protect them from encountering someone infected with the virus,” said Dr.

very small group of people who might want to be vaccinated against COVID-19 but cannot be for medical reasonsT

These include people with a history of severe allergic reaction to an ingredient in the vaccines and people who had a severe allergic reaction to a previous dose of COVID-19 vaccine.