ACE2, Furin, and TMPRSS2 are expressed in major and minor salivary glands. SARS-CoV-2 is detected in the salivary glands of COVID-19 patients. Salivary glands are infected with SARS-CoV-2, so they would secrete saliva containing SARS-CoV-2. The gene discussed is ACE2; the disease is COVID-19.