- Washing hands frequently can prevent many infectious diseases.
Contagious diseases often occur in backward areas because of poor sanitation.
There are actually many sources of infectious diseases in wild animals.
An infectious disease has recently broken out, so please take care of your personal hygiene.
Many infectious diseases are transmitted by droplets.
At present, the source of this infectious disease has not been found.
Tom is an expert on various infectious diseases.
There are still many infectious diseases without specific medicines.
Jack's brother is currently undergoing treatment in the hospital because he contracted an infectious disease abroad.
Mary formed an infectious disease relief fund.