Update, just found out my mom was discharged, was getting ready to visit. She was only there 4 hours. Who knows how she got the cold, blame it on the rain, as the song goes. Thanks for your concern. But I'm still not getting the flu shot.
There's currently a strain of Adult RSV going around which is not the flu but it can be very debilitating for the elderly. I don't know how old your parents are but they may have contracted that virus.
You've made yourself clear about getting the flu vaccine. I personally think that's very unfortunate for you and anyone you might come in contact with but ultimately it's your decision. My instinct is you merely felt the need to argue and dispute the facts. That's ok too. I don't mind at all. When I'm not busy, I'm happy to add my two cents. I learned a long time ago, sometimes you just can't turn a donkey.