- What happens if the latent period for an infection is longer than the incubation period?
- What is a Fomite * 5 points?
- Why do viruses have incubation periods?
- What is the duration of window period?
- What comes after incubation period?
- What are the stages of infection cycle?
- What is meant by a window period?
- How long is window period?
- What are the 6 modes of transmission?
- What are the different stages in the natural history of a disease?
- What is the difference between incubation period and window period?
- What is the most effective way to prevent infection?
- What is communicable period?
- During which periods can a disease be transmitted?
- What is the first stage of an infectious disease?
- What stage of infection is most communicable?
- What are the four stages of pathogenesis?
- What is the incubation period definition?
What happens if the latent period for an infection is longer than the incubation period?
If the latent period is longer than the incubation period, then people are infectious only after symptoms start.
This means they can be recognised as being ill before they are infectious..
What is a Fomite * 5 points?
A fomite (/ˈfoʊmaɪt/) or fomes (/ˈfoʊmiːz/) is any inanimate object that, when contaminated with or exposed to infectious agents (such as pathogenic bacteria, viruses or fungi), can transfer disease to a new host.
Why do viruses have incubation periods?
The infection of multiple cells in the body and subsequent replication of the virus takes time. While the virus remains at low levels, it can neither be detected nor transmitted. This is why this time is known as the virus’ incubation period.
What is the duration of window period?
What is the “window-period” and how long is it? This is the time between original infection with HIV and the appearance of Detectable antibodies to the virus, normally a period of about 14-21 days.
What comes after incubation period?
While latent or latency period may be synonymous, a distinction is sometimes made between incubation period, the period between infection and onset of the disease, and latent period, the time from infection to infectiousness.
What are the stages of infection cycle?
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 meant by a window period?
The window period refers to the time after infection and before seroconversion, during which markers of infection (p24 antigen and antibodies) are still absent or too scarce to be detectable. Tests cannot always detect HIV infection during the window period.
How long is window period?
The window period is time between HIV infection and the point when the test will give an accurate result. During the window period a person can have HIV and be very infectious but still test HIV negative. The window period for a 4th generation antigen/antibody test is about four weeks.
What are the 6 modes of transmission?
Modes of transmissionDirect. Direct contact. Droplet spread.Indirect. Airborne. Vehicleborne. Vectorborne (mechanical or biologic)
What are the different stages in the natural history of a disease?
Events that occur in the natural history of a communicable disease are grouped into four stages: exposure, infection, infectious disease, and outcome (see Figure 1.6). We will briefly discuss each of them in turn.
What is the difference between incubation period and window period?
Incubation period, in medicine, is the time from exposure to an infectious agent to when the first symptoms of infection develop. Window period is the time between initial infection with an agent and when infection can be detected via testing.
What is the most effective way to prevent infection?
Hand washing is the single most effective way to prevent the spread of infections. You can spread certain “germs” (a general term for microbes like viruses and bacteria) casually by touching another person.
What is communicable period?
Communicability: Period of communicability is the time during which an infectious agent may be transferred directly or indirectly from an infected person to another person, from an infected animal to humans, or from an infected person to animals. Also known as the ‘infectious period’.
During which periods can a disease be transmitted?
The five periods of disease (sometimes referred to as stages or phases) include the incubation, prodromal, illness, decline, and convalescence periods (Figure 2). The incubation period occurs in an acute disease after the initial entry of the pathogen into the host (patient).
What is the first stage of an infectious disease?
STAGE 1: INCUBATION PERIOD While the term latency period is used as synonymous, a distinction is sometimes made between incubation period, the period between infection and clinical onset of the disease, and latent period, the time from infection to infectiousness.
What stage of infection is most communicable?
In some cases, a person is contagious during the incubation period, while in others the person is not contagious until the illness begins. The amount of time a child remains contagious depends on the infection and the child. Young children are often contagious for longer than older children.
What are the four stages of pathogenesis?
Stages of Pathogenesis. To cause disease, a pathogen must successfully achieve four steps or stages of pathogenesis: exposure (contact), adhesion (colonization), invasion, and infection.
What is the incubation period definition?
Incubation period: In medicine, the time from the moment of exposure to an infectious agent until signs and symptoms of the disease appear. For example, the incubation period of chickenpox is 14-16 days. In biology, the incubation period is the time needed for any particular process of development to take place.