Question: What Happens During The Latent Phase Of A Disease?

What disease has the shortest incubation period?

Incubation Period of Common DiseasesAdenovirus – 2 to 14 days, leading to a sore throat, fever, and pink eye.Vomiting after exposure to Bacillus cereus, a type of food poisoning – 30 minutes to 6 hours (very short incubation period)Clostridium tetani (Tetanus) – 3 to 21 days.Chickenpox – 10 to 21 days.More items….

What is the incubation period of a disease?

The incubation period is the time from exposure to the causative agent until the first symptoms develop and is characteristic for each disease agent.

What is disease process?

The infectious disease process includes the following components: (1) agent (2) reservoir (3) portals of entry and exit (4) mode of transmission (5) immunity. Types of agents range from the submicroscopic to the large parasites.

What is latent stage of disease?

The latent period is defined as the period of time between the occurrence of infection and the onset of infectiousness (when the infected individual becomes infectious). Individuals in this stage of the disease are said to be infected but not infectious.

What are the 5 stages of disease?

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 happens if the latent period for an infection is longer than the incubation period?

If the latent period is shorter than the incubation period, then individuals are infectious before they have symptoms. This can help the infection to spread more easily. If the latent period is longer than the incubation period, then people are infectious only after symptoms start.

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 4 stages of communicable illness?

The natural history of an untreated communicable disease has four stages: stage of exposure, stage of infection, stage of infectious disease, and stage of outcome.

How long does Huntington’s disease last?

The rate of disease progression and duration varies. The time from disease emergence to death is often about 10 to 30 years. Juvenile Huntington’s disease usually results in death within 10 years after symptoms develop.

How can you tell if its a virus or bacteria?

Diagnosis of Bacterial and Viral Infections But your doctor may be able to determine the cause by listening to your medical history and doing a physical exam. If necessary, they also can order a blood or urine test to help confirm a diagnosis, or a “culture test” of tissue to identify bacteria or viruses.

How does your body fight viruses?

Antibodies are proteins that recognise and bind parts of viruses to neutralise them. Antibodies are produced by our white blood cells and are a major part of the body’s response to combatting a viral infection. Antigens are substances that cause the body to produce antibodies, such as a viral protein.

What is the difference between latent and incubation period?

The period between exposure and infection is called ‘latent period’, since the pathogen is present in a ‘latent’ stage, without clinical symptoms or signes of infection in the host. The period between exposure and onset of clinical symptoms is called ‘incubation period’.

What virus has the shortest incubation period?

Missing from the table (which will be corrected in the next edition) is the incubation period of Ebola virus, which is 2 to 21 days. I would also argue that the incubation period of HIV is not 1-10 years, but 2-4 weeks, the time until the prodromal symptoms occur.

How long does it take a virus to pass?

The virus usually enters your body 1 to 4 days before you have any symptoms, and you can give it to someone a day before you feel anything up to 5 to 7 days after. And kids are contagious even longer. They can spread the virus for another week.

How long is a virus contagious for?

Most people will be infectious for around 2 weeks. Symptoms are usually worse during the first 2 to 3 days, and this is when you’re most likely to spread the virus.

What is incubation period for flu?

The incubation period of influenza is 2 days long on average but may range from 1 to 4 days in length.

What does it mean for an infection to be latent?

Latent infection, generally speaking, means the residence in the body of a specific infectious agent without any manifest symptoms. The symptomless incubation period, which in certain diseases, notably measles and smallpox, is fairly definite in length, is a period of latency in infection.

What is the contagious period called?

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’.