It's because the kid ws unvaccinated probably...
Totally agree with you. I was abroad one night when my boy got a very high fever and I was afraid of meningitis, obviously, because what parent isn't? In the end I decided it wasn't serious enough to warrant a visit to the ER and, indeed, the next morning he was outside playing... I'm sure most normal parents know when there's something definitely wrong and when it's just a fever which will develop into a cold.