Final answer:
Communicable diseases involve the transfer of infectious agents across people and communities.
Step-by-step explanation:
The public health issue that involves the transfer of infectious agents including bacteria, viruses, and parasites across people and communities is communicable diseases.
Communicable diseases are illnesses caused by infectious agents that can spread from one person to another. Examples of communicable diseases include the flu, measles, malaria, and COVID-19.
Preventing the spread of communicable diseases involves measures such as vaccination, proper hygiene practices, and quarantine or isolation of infected individuals.
Learn more about Communicable diseases