Sorry to hear about your brother.
I used to get sick a lot more when traveling extensively for business. Nothing like a big aluminum tube filled with people from all over the world to create a first-class bug cocktail!
Thanks for the condolences. After he died I tried to get hold of my youngest brother to let him know. It took a long time to find out that HE died 2 years ago. I have two brothers left...I think. I know for sure that the county clerk has no record of their demise.
I take antibiotics before hand if I must fly. I always got sick without doing so.