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Figure 4.1 Chain of Infection. The links in the chain of infection include Infectious Agent, Reservoir, Portal of Exit, Mode of Transmission, Portal of Entry, and Susceptible Host [2]: Infectious Agent: Microorganisms, such as bacteria, viruses, fungi, or parasites, that can cause infectious disease. Reservoir: The host in which infectious ...
Dec 7, 2023 · The chain of infection is composed of six different links: the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host. Understanding each link in the chain is critical for preventing the spread of infections and protecting public health. The infectious agent is the microorganism that causes the ...
Dec 7, 2023 · The chain of infection consists of several key components, including the virus or bacteria as the causative agent, the host, and the vector. Understanding the transmission of diseases is essential in preventing and controlling their spread. The virus or bacteria serves as the primary causative agent in the chain of infection.
- Reservoir. The reservoir of an infectious agent is the habitat in which the agent normally lives, grows, and multiplies. Reservoirs include humans, animals, and the environment.
- Portal of exit. Portal of exit is the path by which a pathogen leaves its host. The portal of exit usually corresponds to the site where the pathogen is localized.
- Modes of transmission. An infectious agent may be transmitted from its natural reservoir to a susceptible host in different ways. There are different classifications for modes of transmission.
- Portal of entry. The portal of entry refers to the manner in which a pathogen enters a susceptible host. The portal of entry must provide access to tissues in which the pathogen can multiply or a toxin can act.
Sep 27, 2020 · This action is not available. Chain of infection. This model explains the spread of a communicable disease from one host (or person) to another. The basic idea represented in the chain of infection is that individuals can break the chain (reduce the risk) at any point; thus the spread of the disease can be stopped.
Organization: Public Health Agency of Canada. Date published: 2024-04-09. The chain of infection shows how germs that cause respiratory illnesses can spread between people and make someone sick. To protect yourself and others, you can use personal protective measures. These measures break the chain of infection and stop the spread of germs.
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The chain of components has six sections. They include: Microorganisms: Disease producing, also called pathogens. Virus, parasite, fungus, bacterium. Risk factors: Virulence, pathogenicity, ability to enter host. Reservoir/Source: Environment/habitat where a pathogen can live and multiply.
