Bar chart, % of COVID+ and COVID- participants reporting the presence of each symptom. (a) Symptoms in cancer patients. (b) Symptoms in healthcare workers. Any symptom: having at least one of the symptoms; Anosmia: smell blindness. In the questionnaire, the description was “loss of smell”; Dysg. (Dysgeusia): distortion of the sense of taste. Ageusia: loss of the sense of taste. In the questionnaire, the description was “alteration or even loss of taste”; Rhinorrhea: free discharge of a thin nasal mucus fluid, runny nose; Short. of breath: shortness of breath; Anorexia: Eating disorder; Digestive disor. (Digestive disorders): diarrhea, vomiting, and abdominal pain; p-value: univariate logistic regression, NS: Non-Significant, * p < 0.05, ** p < 0.01, *** p < 0.001.