Pathogen Reservoirs
Pathogen Reservoirs - Related Videos
01:30
Reservoir of Infection
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2026
Infectious diseases arise from intricate interactions between pathogens and their reservoirs. A reservoir of infection refers to the natural habitat where a pathogen lives, grows, and multiplies, serving as a continual source of infection. Reservoirs are broadly classified as either living or nonliving, and each plays a unique role in disease transmission, significantly influencing public health interventions and control strategies.Humans act as reservoirs for a wide array of pathogens,...
01:10
Veins as Blood Reservoirs
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2024
Veins, while chiefly responsible for circulating blood back to the heart, also function as storage vessels for blood. They house approximately 64 percent of the body's total blood volume, a feat made possible by their high capacitance—the inherent ability to expand and accommodate large volumes of blood, even under low pressure. The large diameter and thin walls of veins augment their distensibility, significantly more so than arteries, due to their classification as capacitance vessels. When...
10:39
Single Cell Measurements of Vacuolar Rupture Caused by Intracellular Pathogens
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Cited by 22 •
2013
We describe a method for tracking the endomembrane rupture elicited by the intracellular bacteria Shigella flexneri and Mycobacterium tuberculosis upon host cell invasion. Our assay makes use of CCF4, a host cytoplasmic FRET probe in live or fixed cells. This reporter is degraded by an enzyme activity present on the bacterial surface.
10:38
Measurement of the Rheology of Crude Oil in Equilibrium with CO2 at Reservoir Conditions
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Cited by 2 •
2017
A method for measuring the rheology of crude oil in equilibrium with carbon dioxide at reservoir conditions is presented.
11:18
Automated Separation of C. elegans Variably Colonized by a Bacterial Pathogen
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Cited by 1 •
2014
The wormsorter facilitates genetic screens in Caenorhabditis elegans by sorting worms according to expression of fluorescent reporters. Here, we describe a new usage: sorting according to colonization by a GFP-expressing pathogen, and we employ it to examine the poorly understood role of pathogen recognition in initiating immune responses.
FAQs
A reservoir supports the pathogen’s continued presence and availability for transmission, whereas an incidental or dead-end host does not maintain that role. This distinction depends on whether infection persists or multiplies in the host and whether the pathogen can move onward from it. Making the distinction helps researchers interpret transmission pathways and focus control efforts on biologically important sources.
Asymptomatic hosts may carry infectious agents without obvious illness, allowing pathogens to persist while remaining difficult to detect through symptom-based observation. If these hosts shed the agent, they can contribute to direct or indirect transmission despite appearing healthy. Including them in reservoir investigations improves understanding of hidden transmission and supports more complete surveillance of disease emergence.
Shedding releases infectious agents from a reservoir into a form that can reach another host or environment. Transmission may then occur through direct contact, contaminated food or surfaces, water or soil, vectors, or other exposures. Examining this sequence helps researchers connect a reservoir to specific infection events and identify where interventions could interrupt movement of the pathogen.
Maintenance conditions determine whether an infectious agent remains present, persists over time, or sometimes multiplies within its source. Linking those conditions to transmission supports disease-emergence studies and transmission modeling. It also helps explain why a pathogen may remain available for spillover in some hosts or environments and informs surveillance and environmental management decisions.
Investigators trace where an infectious agent normally persists and examine how it becomes available for transmission. They consider human, animal, and environmental sources, including asymptomatic hosts, wildlife, domestic animals, soil, and water, then connect those sources with shedding and exposure routes. This process helps distinguish a true reservoir from a host involved only incidentally in infection.
Reservoir information helps researchers trace disease emergence by linking infected people or cases to possible animal, human, or environmental sources. Surveillance can then focus on locations, hosts, or settings where the agent persists and may be shed. These findings support outbreak control by clarifying transmission pathways and identifying opportunities to reduce exposure before additional spillover occurs.
Understanding where a pathogen persists helps determine whether control should focus on susceptible populations, reservoir-associated exposure, or environmental sources. The resulting evidence can inform vaccination strategies, environmental management, and measures that reduce contact with contaminated settings or infectious hosts. These approaches aim to limit transmission from the reservoir and lower the likelihood of spillover into human populations.