What are the six stages of infection?
No matter the germ, there are six points at which the chain can be broken and a germ can be stopped from infecting another person. The six links include: the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host.
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 infectious disease last?
The common cold is infectious from a few days before your symptoms appear until all of the symptoms are gone. 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.
Which stage of infection is most contagious?
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.
What are the 5 stages of infectious 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).
How does infection leave the body?
Infection does not necessarily lead to disease. Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. In response to infection, your immune system springs into action. White blood cells, antibodies, and other mechanisms go to work to rid your body of the foreign invader.
What are the six major causes of infectious diseases?
Infectious diseases can be caused by:
- Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.
- Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.
What are the 3 stages of infection?
Stages of Infection. There are three stages of the HIV infection, namely: acute infection, clinical latency, and AIDS.
What are the 5 modes of transmission?
There are five main routes of disease transmission: aerosol, direct contact, fomite, oral and vector, Bickett-Weddle explained at the 2010 Western Veterinary Conference. Diseases can be spread to humans (zoonotic) by those same five routes.
What are the 5 most common infectious diseases?
The 5 Most Common Infectious Diseases
- Hepatitis B. According to current statistics, hepatitis B is the most common infectious disease in the world, affecting some 2 billion people — that’s more than one-quarter of the world’s population.
- Hepatitis C.
What do infectious disease doctors diagnose?
The role of an infectious disease specialist is to review a patient’s medical data, including records, X-rays and laboratory reports. They may perform a physical examination, depending on the type of problem. Laboratory studies are often necessary and may include blood studies and cultures of wounds or body fluids.
What disease kills the fastest?
- Flesh Eating Bug. This bug can quickly sweep through the body eating the body’s soft tissue.
- Cholera. This is an intestinal disease caused by eating contaminated water or food and can kill anyone within hours.
- Enterovirus D68.
- Bubonic Plague.
- Dengue Fever.