so it's okay to send kids to school even if they're sick?
Yes that’s exactly the message the campaign is sending! Despite the fact that in doing so this will cause outbreaks of illness and potentially lead to parents not trusting their young people when they feel ill or under too much stress to attend school.
This will deny young people agency and suggests that they should go against their natural instincts.
It just feels like it trivialises things. Yes, you probably couldn't fit all the nuances of it on a poster.
Which is a good reason not to do it!