Why you must change your toothbrush after recovering from Covid-19 Why you must change your toothbrush after recovering from Covid-19 Experts recommend that once a Covid-19 patient has recovered, they should change their toothbrush and tongue cleaner to prevent further transmission of the disease. advertisement UPDATED: May 7, 2021 08:24 IST Experts say toothbrush of an infected person can harbour the virus and it is best that it's discarded after recovery. (Photo: Getty Images) Coronavirus infections are spreading in India at an alarming rate, and it is now well evidenced that a person can be re-infected after having recovered once. While vaccines have proven to be effective as a preventive measure, experts are of the view that even they can't guarantee 100 per cent protection in all situations, at all times.