Which of the following changes or sanitation practices is/are likely to reduce the spread of a pathogen that is transmitted primarily via the waterborne (fecal-oral) route?
Boiling drinking water before consumption
Installing effective sewage treatment systems
Wearing face masks in crowded public indoor spaces
1, 2 and 3
Only 1 and 2
Only 2 and 3
Only 1
Communicable diseases, disease prevention and the immune system Questions
