Covid-19 infects cells in the mouth, according to study | Video | CNN

A study published in the journal Nature Medicine found evidence that COVID-19 infects the mouth, including the cheeks, gums, and salivary glands.

People who are negative in the nasal test, sometimes positive in the saliva test, since the virus is eliminated from the nasopharynx, but it can persist in the saliva, suggesting a sustained spread.