Subclinical infection

SUBCLINICAL INFECTION
An infection, or phase of infection, without readily apparent symptoms or signs of disease.
SUBCUTANEOUS
Beneath or introduced beneath the skin (e.g., subcutaneous injections).

Subclinical infections may not produce symptoms at all. If symptoms do appear, they tend to be mild and resolve within 72 hours.

Main article: Subclinical infection
Asymptomatic infections are important because a person might be infectious and so can spread the infection to others.
[edit] Conditions ...

This is referred to as a subclinical infection.
Before the disease breaks out, one to two weeks may pass with symptoms that are similar to those of flu.
A sore throat, with swollen tonsils that are heavily covered by a white coating.
Fever.

A carrier state may follow acute illness or mild or even subclinical infections. About 1.0 to 4.0 percent of untreated cases will become carriers and the chronic carrier state is more common among persons infected during middle age. S.

either generalised or neurological; symptomatic disease occurring in the first months of life, usually neurological; sequelae or relapse later in childhood of a previously unrecognised infection, usually chorioretinitis; and subclinical infection.

There are three basic patterns of polio infection: subclinical infections, nonparalytic, and paralytic. Approximately 95% of infections are subclinical infections, which may not have symptoms.
SUBCLINICAL INFECTION ...

Subclinical infection in young chicks results in: deficient immunological response to Newcastle disease, Marek's disease and Infectious Bronchitis; ...

Roughly one-third of cases have no symptoms - this is called a silent or subclinical infection, or sometimes anicteric infection, meaning there is no jaundice or yellow appearance of the skin and membranes.

Nasolacrimal drainage system obstruction may be caused by strictures, tumors, or foreign bodies (eg, stones, often associated with subclinical infection by Actinomyces). Obstruction also can be a congenital malformation.

William Crook, which hypothesized that a variety of common symptoms such as fatigue, PMS, sexual dysfunction, asthma, psoriasis, digestive and urinary problems, multiple sclerosis, and muscle pain, could be caused by subclinical infections of ...

Note: in some people, hepatitis A infection only causes mild symptoms and no jaundice. In others, particularly in children aged under five, no symptoms develop at all (this is known as subclinical infection).
How is hepatitis A diagnosed?

The symptoms last from 2-12 weeks although subclinical infections can occur. 10% of the cases go on to a chronic state. In addition, 0.1-1% of the U.S. population are asymptomatic carriers of HBV and 8-10% are AB positive.

It gains access to deep tissues via trauma, surgery, an IV line, etc.
It infects an immunocompromised patient.
Not all people infected by a bacteria may develop disease-subclinical infection is usually more common than clinically obvious infection.

Genital warts are spread by direct skin-to-skin contact during vaginal or anal sex. Infection may occur after direct contact with a visible wart. It is also possible that contact with an area of skin with a subclinical infection may result in ...

See also: Symptom, Viral, Infections, Fever, Flu