This could be bad.
Eyewitness on the flight (as per the reported story linked) claims people boarded that were already sick UE is claiming only ten now reporters say nearly 100 Hopefully we have a reporting error because if ten got on sick and now there is 100 this is about as scary as it get for possible bio weapon.
“Probably not food poisoning.”
Probably true. If food poisoning, then gastro-intestinal would be the issue. This sounds like respiratory. (Sounds a lot like our whole group came down with during and/or the day after a cruise.)