Opportunistic pathogens are germs or microorganisms that are normally harmless, but when given the opportunity, can cause diseases or infections in individuals who have weakened immune systems or specific vulnerabilities. Full definition
They are also the most common opportunistic pathogen in AIDS patients. (customprobiotics.com)
However, increased temperatures were quickly followed by a loss of resistance to pathogenic disease and an increased abundance of microbial pathogens in A. palmata [17], perhaps explaining the high incidence of disease following the thermal stress by either contagious or opportunistic pathogens [18]. (journals.plos.org)
«We may be closer to understanding the way gut bacteria and opportunistic pathogens such as Psa could affect celiac disease risk. (sciencedaily.com)