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Can I get 'long COVID' if I'm infected after vaccination?

By Lindsey Tanner
Published  August 5, 2021 4:59pm EDT
Coronavirus
Associated Press

Vaccine Breakthrough COVID

Being vaccinated against COVID-19 doesn't guarantee that you won't get infected. But here is why getting vaccinated helps protect you anyway and is so crucial to ending the pandemic.

Can I get 'long COVID' if I'm infected after vaccination?

It's unclear, but researchers are studying the chances of long-term symptoms developing in anyone who might get infected after vaccination. 

The COVID-19 vaccines in use around the world are effective at preventing severe illness and death from the coronavirus but some people do get infected after the shots. With such "breakthrough" cases, health experts say the vaccines should help lessen the severity of any illness people experience. 

But researchers are also looking at whether those breakthrough cases could lead to long COVID-19, which is when people experience persistent, returning, or new symptoms a month or more after infection. The condition can develop after severe initial infections or even in those who initially had mild or no symptoms.

Some estimates indicate about 30% of unvaccinated COVID-19 patients develop long-term symptoms, including shortness of breath, fatigue, difficulty concentrating, insomnia, and brain fog. Similar symptoms can develop after other viral infections, too. 

RELATED: New data suggests vaccinated people could transmit delta variant

A small study from Israel published recently found apparent long COVID-19 in several health workers with breakthrough infections. They developed mild symptoms including cough, fatigue, and weakness that persisted for at least six weeks. 

Larger studies are ongoing.

Researchers don't know why symptoms linger but believe some symptoms reflect lung scarring or damage to other organs from severe initial infections. Another theory suggests that the virus may linger in the body and trigger an immune response that leads to the symptoms. 

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