If have symptoms and you #test negative on Day #1, #2 or #3, it is very important to test again on Day #4 and/or Day #5 to make sure that you have not become positive. If you only test on Day #1, you may not know that you actually have a #COVID infection and you may go on to infect others.
 
https://open.substack.com/pub/drruth/p/covid-news-and-more-93023?r=2672ga&utm_campaign=post&utm_medium=email