This is about Jay (not his real name) that had covid test 2 times as required by their office. After the last test of showing he was negative, he felt ill - cough, fever, loss of appetite and later some hair loss. He quarantined himself for 14 days. After that he voluntarily took a swab for covid test. Again, he was negative of covid. Now this is my analysis that Jay did not have covid. He was infected by typhoid which has the same symptoms of covid except the falling hair. I posted this for a lesson to anyone who may be mistaken in their evaluation of the sickness.