unknown drones/orbs all over american and british military bases, that fog which made breathing a little difficult, right when the sun is at its lowest and thus vit d is likely at its lowest in most people, during the holiday period which inundates people with stress and causes fatigue, and lastly stress all over social media due to muskposting and the new orleans attack / nyc cybertruck bomb. all of these things contribute to illness, and to a weaker immune system. for vaccinated people, that may be enough to make them very sick. bear in mind it's been three years since most of them took the jabs and the first (some second) boosters, and the damage builds up slowly over time.
Netherlands