Fahrenheit is best for ambient temperatures. 0 F is what humans feel is a very cold day, and 100 F is what humans feel is a very hot day.
Celsius is best for literally everything else, but for humans feeling of ambient temperature Fahrenheit is best
Yeah the sticker sentence especially. That's essentially the same as saying that the kid got the shot. HIPAA doesn't say "it's ok to reveal private health information as long as you do it in a wink-wink manner." Revealing personally identifiable health information is forbidden no matter how you do it.