I did! Luckily just twice, but not fun. I got a flu of some sort when I was with the arctic nomads, and the women took care of me by burning incense and making me drink a lot of a very bitter herb water mixture. I also had ibuprofen and antibiotic cream and I brought a Garmen inReach in case I needed to reach the outside world. I took the ibuprofen but had a fever, violent sweating and body aches, for about five days. In Mongolia I had the stomach flu and unfortunately it started when we were hours from the yurts (gers) so I had to hop off my horse and moan every time it hit me, hiding behind the horse for privacy because there is not a lot of plant coverage in the steppe. It was a very public spectacle and they segregated me from everyone else by setting up a blanket divider in the yurt and I just ran outside to my own special pit toilet that they dug for me because they didn’t want me using the regular outdoor toilet when I was so sick.