I think covid probably felt worse for those who had gotten a bunch of flu shots prior, inhibiting their immune system's ability to apply previous immunity to covid.
Discussion
I don’t deny that most peoples immune systems have been completed compromised in todays world by all the toxins we exposed to via vaccines, EMFs, GMO foods, tap water, lack of sunlight, overworked etc means most people are susceptible to flus. It gets worse and worse each year as western culture becomes more and more obese.
Not to forget the increased depletion of vitamins and minerals in todays fruit and vegetables, 🥲