Infectious disease terms. terms

Infectious disease

A disease caused by an organism such as a protoctist, bacterium or virus that are all pathogens

Pathogen

An organism that causes disease

Disease transmission.

The transfer of a pathogen from a person infected with that pathogen to uninfected person transmission may occur by direct contact through the air or water or by an animal vectors , such as insects

Disease carrier

A person infected with a pathogen who shows no symptoms but can be the source of infection in other people

Transmission cycle

The passage of a pathogen from one host to another is continually repeated as the passage in infects , new hosts

Disease eradication

The complete breakage of the transmission cycle of pathogen , so that they are no more cases of the disease caused by the pathogen anywhere in the world

Endemic disease

A disease that is always in a population.

Disease vector

An organism which carries a pathogen from one person to another , or from an animal to a human

H I v

Human immunodeficiency virus

AIDS

Acquired immunodeficiency syndrome

Opportunistic nfection

An infection caused by pathogen that takes advantage of a hose with a weakened immune system , as may happen in someone with an h I v infection

Antibiotic

Substance derived from a living organism that is capable of killing or inhabiting the growth of a microorganism

Antibiotic resistance

The ability of bacteria or fungi to grow in the presence of an antibiotic that would normally slow their growth or kill them.Antibiotic resistance arises by mutation and becomes widespread when antibiotics are overused