The common cold can make you miserable, but it might also help protect you against COVID-19, a new study suggests.
The researchers added that people who’ve had COVID-19 may be immune to it for a long time, possibly even the rest of their lives.
The research focused on memory B cells, long-lasting immune cells that detect pathogens, produce antibodies to destroy them, and remember them for the future.
The study authors compared blood samples from 26 people who were recovering from mild to moderate COVID-19 and 21 healthy people whose samples were collected six to 10 years ago, long before they could have been exposed to COVID-19.
They found that B cells that attacked previous cold-causing coronaviruses appeared to also recognize the coronavirus that causes COVID-19.
This could mean that anyone who’s ever been infected by a common cold coronavirus — nearly everyone — may have some amount of immunity