Infecting more than 2 billion people worldwide, Viruses, bacteria, fungi and parasites are the most common causes of chronic infectious diseases.
Infectious diseases are illnesses caused by harmful agents (pathogens) that get into your body. The most common causes are viruses, bacteria, fungi and parasites. Infectious diseases usually spread from person to person, through contaminated food or water and through bug bites
In adults, recurrent infections are usually due to an anatomic lesion, a functional disorder, or to a secondary cause of immunosuppression.
To learn more about chronic infectious diseases, refer
https://brainly.com/question/9624106
#SPJ4