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Fimbriae (plural): modern term for short, hair-like projections or appendages (organelles) on the outer surface of certain bacteria composed of protein subunits ( pilin) extending outward from the surface that act as a virulence factor by promoting adherence; formerly known as pili; fimbria (singular)
Carrier. 1. A person or animal harboring a specific Infectious Agent in the absence of discernible clinical disease and which serves as a potential source of infection. The carrier state may occur in an individual with an infection that is inapparent throughout its course (known as a healthy or asymptomatic carrier) or the carrier state may ...
Jul 25, 2016 · The classical features of an individual said to be a carrier of Streptococcus pyogenes (Group A streptococcus) is the confirmed presence of the organism in their posterior pharynx, without any of the usual attendant clinical symptoms of acute pharyngitis. This chapter provides an overview and discussion of relevant topics of S. pyogenes carriage, including its prevalence, longitudinal studies ...
6 Challenges and perspectives. The rapid development of synthetic biology and the integration of nanoscience and nanotechnology have brought new vitality to the use of bacteria as drug carriers. Bacterial drug carriers have attracted worldwide attention and are undergoing rapid development.
The description of the carrier state confused existing definitions of pathogens. To both explain the carrier state and preserve the distinction between pathogenic and nonpathogenic microbes, the concept that host and pathogen could adapt to one another was put forth.
An asymptomatic carrier is a person or other organism that has become infected with a pathogen, but shows no signs or symptoms. [1] Although unaffected by the pathogen, carriers can transmit it to others or develop symptoms in later stages of the disease. Asymptomatic carriers play a critical role in the transmission of common infectious ...
This page titled 12.4: How Diseases Spread is shared under a CC BY license and was authored, remixed, and/or curated by OpenStax. Pathogens often have elaborate adaptations to exploit host biology, behavior, and ecology to live in and move between hosts. Hosts have evolved defenses against pathogens, but because their rates of ….
