re: My Grandmother Tested Positive For Covid, Flu-A and Flu-B.

Sadly, it’s possible. Flu variants cycle seasonally and sometimes A is the more predominant strain within the community, while at other times B seems to be the one circulating more widely. But there are certainly times when both circulate. It’s not unheard of to contract both simultaneously, especially in certain environments like schools or in assisted living environments. There are also increasing reports of likely COVID and flu co-infections last spring. As for how concomitant infections happen, all it takes is to have contacted a contaminated surface then rubbed the face/nose/eyes. Imagine the hundreds of people touching public door handles or shopping carts that aren’t wiped down as an example and that people simply refuse to stay home if they only feel mildly ill. Then add that a hearty part of the public either gripes about wearing masks because blah blah blah their freedom and screw their neighbors, or they wear them like a chinstrap. Everybody thinks they should be the exception to the rule. And it’s putting others at unnecessary risk. If you’re skeptical, you could request retesting her to confirm. Best wishes for her recovery!