Contagious disease

[3] Some common infectious diseases are influenza, COVID-19, ebola, hepatitis, HIV/AIDS, Human papillomavirus infection, Polio, and Zika virus.

Koch's postulates, which were published at the end of the 19th century, were the standard for the next 100 years or more, especially with diseases caused by bacteria.

Originally, the term referred to a contagion or disease transmissible only by direct physical contact.

Often the word can only be understood in context, where it is used to emphasize very infectious, easily transmitted, or especially severe communicable diseases.

Negative room pressure is a technique in health care facilities based on aerobiological designs.