Tonsillitis and COVID-19 can share several symptoms, including fever, sore throat, digestive discomfort, and headache. However, tonsillitis has some unique symptoms like enlarged lymph nodes, swollen tonsils, bad breath, and stiff neck that are not typically seen in patients with COVID-19. Tonsillitis itself is not a symptom of COVID-19.

https://www.cooperhealth.org/services/tonsillitis-adults/covid-19-and-tonsillitis