Respuesta :

hoosmoose
The poor water quality may have let microorganisms and bacteria flourish, and be passed through the body through ingestion.
kcrawley2004

Answer:

1st: ^^^ The poor quality may have let microorganisms and bacteria flourish, and be passed through the body through ingestion.

2nd: By screening UN workers for illness, increasing water sanitation, and providing adequate sewage treatment.