I think the parent not taking the kid to the doctor when they are clearly sick, and instead taking them to a restaurant is worthy of an investigation. That's carelessness and neglect.
Bullshit. Kids get sick all the time. Diarrhea and vomiting for a day or two is
routine. When my kid gets sick, I'm lucky it isn't coming out both ways at the same time. Heck, the last time he was sick I told my wife that I was going to try and coordinate the eruptions like those folks on youtube did with mentos and soda.
Seriously, people need to back off when it comes to allegations of child abuse and neglect. Taking a sick kid to a restaurant is hardly neglect, especially if it is an isolated incident. Does it totally disregard the health of the other restaurant patrons? Sure! But it is not neglect.
Of course, these situations often involve a sliding scale. If the kid's parents are off to Friendlies for a fribble everytime little johnny gets the sh!ts, maybe there is something legitimately wrong (either that or they are just trying to cheer the kid up). But if a kid happens to be sick and they take him a restaurant once . . . . hard to see how that is "neglect."
Also OP, what interest do you have in this kid? He/she doesn't seem to be related to you, so how are you so knowledgeable about what is going on in his/her life?
And FWIW, the only time my doctor requested a stool sample from my kid was when he was shit!ing pure liquid for 3-4 days and had a really high fever to boot. I'm not saying 1-2 days of diarrhea doesn't warrant a stool sample, but my own experience tells me that it is not always called for.