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.
We will obtain blood from persons with varicella, zoster, and those vaccinated with the varicella (not zoster) vaccine at the NIH Clinical Center and measure immune responses against specific viral proteins, look for virus in the blood, and in some cases measure immune responses against cellular proteins over time.