I take cipro and a Z-pack with me every trip.
Nothing in the lower GI that cipro won’t kill in a couple of days… and nothing upper respiratory that a Z-pack won’t kill in short order…
I also take zolipedem (ambien) with me.. cures jet lag in 1 night (80%)
Learned those tricks when we were doing “round the world in 30 days tours” at the World Bank regularly… It was nothing for us to leave DC, head east, hit 10-12 countries in 4 weeks, circle the globe, and then come back home… all the while interacting with hundreds (or more) people, half of them in developing countries, with us carrying nasties we picked up in Niger to France.. then French nasties to Egypt.. Egyptian nasties to Ethiopia.. Ethiopian nasties to India.. Indian nasties to Australia.. etc etc…
We all had runny noses and the squirts pretty much all the time…
Cipro, Z-Packs, and Ambien kept us moving…