How you know you are no longer contagious
דיון מתוך פורום מחלות זיהומיות
https://www.washingtonpost.com/health/2022/08/01/covid-contagious-period-isolation/
https://www.nbcchicago.com/news/local/when-are-you-most-contagious-with-covid-and-how-long-can-you-spread-it/2902828/