Should You Throw Away Your Toothbrush After Having COVID-19?

When I had COVID-19, I had a mild case but was still pretty sick. After I recovered, I had some pressing questions like: "How exactly should I disinfect my house?" "Will I ever be able to walk up my stairs again without feeling completely winded?" and "Should I throw away my toothbrush?"

The last question stumped me the most because I typically toss my toothbrush after a bout of sickness. But since COVID-19 is a newer—and seemingly always evolving virus, I wondered if the toothbrush-tossing guidance was any different. So, I asked Bertha Hidalgo, Ph.D., M.P.H., an associate professor of epidemiology at the University of Alabama at Birmingham, to weigh in.

"The SARS-CoV-2 virus [which causes COVID-19], including the Omicron variant, is not very stable on surfaces. However, it is always a good idea to change toothbrushes or toothbrush heads after illness," says Hidalgo.

The Centers for Disease Control and Prevention (CDC) adds that the SARS-CoV-2 virus can survive for up to three days on common nonporous surfaces. So once you've recovered—or after about 10 days since you tested positive—it's worth swapping out your toothbrush for a new one—especially if you share a toothbrush holder with another person.

In case you need a little more motivation to pick up a new toothbrush or swap out your toothbrush head, the American Dental Association (ADA) recommends replacing yours every three to four months. Need to restock? These five replacement toothbrushes and toothbrush heads all get a seal of acceptance from the ADA.