The last link in the chain of infection is the susceptible host. This is the organism (e.g., You or your resident!) that will feel the effects of the infectious disease that has traveled through the chain of infection.
Which of the following best describe a portal of exit?
Portals of exit is the means by which a pathogen exits from a reservoir. For a human reservoir, the portal of exit can include blood, respiratory secretions, and anything exiting from the gastrointestinal or urinary tracts.
What is a reservoir host in the chain of infection?
The reservoir (source) is a host which allows the pathogen to live, and possibly grow, and multiply. Humans, animals and the environment can all be reservoirs for microorganisms.
What best describes a pathogen?
What is a pathogen? A pathogen is defined as an organism causing disease to its host, with the severity of the disease symptoms referred to as virulence. Pathogens are taxonomically widely diverse and comprise viruses and bacteria as well as unicellular and multicellular eukaryotes.
What are the chains of infection?
The six links include: the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host. The way to stop germs from spreading is by interrupting this chain at any link.
What is an example of an exogenous infection?
Exogenous bacteria are bacteria introduced to closed biological systems from the external world. They exist in water, earth, and the air. Examples are cholera, Legionella, salmonella, Lyme disease, tuberculosis, and bactillus anthracis.
Who has the highest risk of developing a nosocomial infection?
All hospitalized patients are susceptible to contracting a nosocomial infection. Some patients are at greater risk than others-young children, the elderly, and persons with compromised immune systems are more likely to get an infection.
Susceptibility of a host depends on genetic or constitutional factors, specific immunity, and nonspecific factors that affect an individual’s ability to resist infection or to limit pathogenicity. An individual’s genetic makeup may either increase or decrease susceptibility.
What are the 4 factors that make a person more susceptible to infection?
We all have different susceptibility
Multiple innate factors (e.g., age, nutritional status, genetics, immune competency, and pre-existing chronic diseases) and external variables (e.g., concurrent drug therapy) influence the overall susceptibility of a person exposed to a virus.
What is the meaning of reservoir host?
A host that serves as a source of infection and potential reinfection of humans and as a means of sustaining a parasite when it is not infecting humans.
What characteristics make an organism an effective human pathogen?
In order to survive and multiply in a host, a successful pathogen must be able to: (1) colonize the host; (2) find a nutritionally compatible niche in the host body; (3) avoid, subvert, or circumvent the host innate and adaptive immune responses; (4) replicate, using host resources; and (5) exit and spread to a new …
What makes a microbe pathogenic?
Microbes that cause disease are called pathogens. It is important to remember that: A pathogen is a micro-organism that has the potential to cause disease. An infection is the invasion and multiplication of pathogenic microbes in an individual or population.
What is another word for pathogen?
synonyms for pathogen
What are some things you can to do make yourself less susceptible?
How to Stop Being So Sensitive
- Realize that it’s most likely not about you. …
- Give silence a try. …
- Be realistic. …
- Value your own approval. …
- Understand that negative feelings take time and effort to maximize. …
- Practice controlling your emotions. …
- Keep your attention in the present.
What are transmission-based precautions in infection control?
Transmission-Based Precautions are the second tier of basic infection control and are to be used in addition to Standard Precautions for patients who may be infected or colonized with certain infectious agents for which additional precautions are needed to prevent infection transmission.
What do standard precautions measure?
Standard precautions are a set of infection control practices used to prevent transmission of diseases that can be acquired by contact with blood, body fluids, non-intact skin (including rashes), and mucous membranes.