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In biology, a pathogen (Greek: πάθος, pathos "suffering", "passion" and -γενής, -genēs "producer of"), in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. [1] The term pathogen came into use in the 1880s.
Infectious keratitis generally requires urgent antibacterial, antifungal, or antiviral therapy to eliminate the pathogen. No Kingella kingae: Kingella kingae infection No PRNP: Kuru: Autopsy None No Lassa virus: Lassa fever: Laboratory testing Supportive No Legionella pneumophila: Legionellosis (Legionnaires' disease) Urinary antigen test ...
An opportunistic infection is a serious infection caused by pathogens (bacteria, fungi, parasites or viruses) that under normal conditions, such as in humans with uncompromised immune systems, would cause a mild infection or no infection at all.
Bacterial pathogens also require access to carbon and energy sources for growth. To avoid competition with host cells for glucose which is the main energy source used by human cells, many pathogens including the respiratory pathogen Haemophilus influenzae specialise in using other carbon sources such as lactate that are abundant in the human ...
Related: The 26 Funniest NYT Connections Game Memes You'll Appreciate if You Do This Daily Word Puzzle. Hints About Today's NYT Connections Categories on Wednesday, February 19. 1. Things you ...
"Germ" refers not just to bacteria but to any type of microorganism, such as protists or fungi, or other pathogens, including parasites, viruses, prions, or viroids. [1] Diseases caused by pathogens are called infectious diseases. Even when a pathogen is the principal cause of a disease, environmental and hereditary factors often influence the ...
The first category adds more high-risk human pathogens to the regulated list, such as West Nile virus, as well as plant and animal pathogens that pose risks to livestock and crops. It also expands ...
An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. [1] An infectious disease, also known as a transmissible disease or communicable disease, is an illness resulting from an infection.