One of the responsible for one of the major cases of corruption that stole millions from the government spent only 1 year and half in jail. That guy stole for more than 12 years. Nobody cares. Second, the people in Brazil do not have, in general, political inclinations.
Faecal samples may be collected for microbiological culture if the child has significant associated abdominal pain or blood in the stool, as a bacterial cause of gastroenteritis is more likely. However these results usually don't alter treatment.
1 According to Consumer Reports, 69 percent of all raw pork samples tested were contaminated with the dangerous bacteria Yersinia enterocolitica, which can cause fever and gastrointestinal illness. Ground pork was more likely than pork chops to be contaminated.  The pork also tested positive for other contaminants.