What Are Some Infectious Diseases. 7 rows some viruses cause warts, runny nose, muscle ache, etc. Infectious diseases are a class of diseases and their symptoms, like fever and cough, caused by tiny organisms.
These infectious diseases generally spread through contaminated food and water, some spread through the transfer of body fluids and skin contact. Here are some tips to relieve a chesty, dry or persistent cough. Most of these infections are viral, and only a small portion are caused by bacteria.