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Jun 16, 2022 · An opportunistic pathogen is an organism that normally does not harm its host but can cause disease especially when the host’s resistance is low.
Infectious diseases result from the interplay between the pathogens and the defenses of the hosts they infect. The appearance and severity of disease resulting from the presence of any pathogen depends upon the ability of that pathogen to damage the host as well as the ability of the host to resist the pathogen.
An opportunistic infection is an infection caused by pathogens (bacteria, fungi, parasites or viruses) that take advantage of an opportunity not normally available.
Opportunistic microorganisms are typically non-pathogenic microorganisms that act as a pathogen in certain circumstances. They lay dormant for long periods of time until the hosts’ immune system is suppressed and then they seize the opportunity to attack.
Jul 6, 2016 · Opportunistic pathogens (OP) pose a serious threat to human health, and the frequency of opportunistic infections (OI) is increasing worldwide. Rising rates of human OI are attributed to the emergence of antimicrobial-resistant or more virulent microbes, as well as...
Diseases caused by opportunistic pathogens typically are found among groups such as the elderly (whose immune systems are failing), cancer patients receiving chemotherapy (which adversely affects the immune system), or people who have AIDS or are HIV-positive.
Aug 10, 2017 · Colonizing opportunistic pathogens (COPs) are microbes that asymptomatically colonize the human body and, when the conditions are right, can cause infections. Their ability to persist indefinitely and to be transmitted without detection [ 1] gives COPs a unique epidemiology that warrants special consideration.
