I had two groups of friends and relatives, traveling on separate coasts, contract Covid very quickly and severely, despite being vaxxed, boosted, and in some instances having had Covid previously. The suspicion is that both groups contracted it via airports and on planes as opposed to actual in-person meetings and greetings. The exposure to symptom time lag was very short (24-48 hours) and they spread it to household members within the same 24-48 hours.

One of the friends is an ultra-marathoner who's been vaxxed, boosted, and had it previously, so about as healthy and prepared as one could get. His wife is a personal trainer in better shape than him, so again, as physically well prepared as one could get. He got very sick.

Just a heads up as the new variants appear to be faster than previous. And, as has been reported in academia, getting Covid a second time appears to be significantly worse than the first go round, regardless of whether you've had it or whether you have been vaxxed and boosted.

https://time.com/6232103/covid-19-reinfections-effects/