Common cold said to offer some protection from COVID

 Science Daily:

A new study led by researchers at National Jewish Health has found that recent infection with the common cold -- often caused by rhinoviruses -- may offer temporary protection against infection with SARS-CoV-2, the virus that causes COVID-19. The research provides fresh insight into why children are less likely than adults to develop symptoms and could point toward new ways to reduce the severity of respiratory illnesses.

Published in the Journal of Infectious Diseases earlier this month, the study analyzed data from the nationwide Human Epidemiology and Response to SARS-CoV-2 (HEROS) study, which tracked more than 4,100 people in 1,394 households from May 2020 to February 2021.

Researchers found that people, particularly children who had a recent rhinovirus infection, were significantly less likely to become infected with SARS-CoV-2 in the following weeks. This effect is thought to be linked to the body's antiviral defenses. Rhinoviruses trigger a strong interferon response in the airways, which can temporarily prime the immune system to fight off other viruses.
...

When I came down with COVID, it was a rather mild case that lasted about a week.  I don't recall whether I was having a cold at the time.

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