Answer:
Bacillus cereus
Explanation:
Bacillus cereus is a bacteria associated with foodborne infection (which is what happened to the children exposed in the question). These bacteria usually grow on rice that has not been properly cooled or heated.
The poisonings caused by Bacillus cereus result from the ingestion of food contaminated with the microorganism and / or the enterotoxins it produced during its growth. The poisonings associated with this microorganism are usually of short duration and not severe. However, several sporadic outbreaks and cases have been reported.
Homelessness are social problem that impacts the health of a community for they are prone for a broad range of acute and chronic illnesses because they lack proper nutrition, good hygiene and they could be deprived of medical assistance.
Once they are sick, they could spread the infection to one community to the other because they have the tendency to hop on one place to the other where they can take shelter. Therefore, they could be a carrier of bacteria and viruses that will put the health of a community at risk.
It seems like it's long term goals.
They are all characterized by dramatic, overly emotional or unpredictable thinking or behavior :)
You should speak with a local pharmacist, or your doctor. Hope this helps!