ycbm
Einstein would be proud of my Insanity...
Do you worry as much for yourself catching flu?
Hell yes! I can only assume you've never had a real case. I've had it at 14 and again last year 45 years later. Both times it wiped me out for weeks. My dose last year has left me with permanently reduced lung capacity and I now have an inhaler.
For a horse with a much longer, deeper airway, it can easily be career, or even life, ending.