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It may also be spread through close contact with an infectious person. [1] While children often do not have symptoms when infected, they are still able to infect others. [1] After a single infection, a person is immune for the rest of their life. [10] Diagnosis requires blood testing, as the symptoms are similar to those of a number of other ...
An infectious disease agent can be transmitted in two ways: as horizontal disease agent transmission from one individual to another in the same generation (peers in the same age group) [3] by either direct contact (licking, touching, biting), or indirect contact through air – cough or sneeze (vectors or fomites that allow the transmission of the agent causing the disease without physical ...
The following outline is provided as an overview of and topical guide to concepts related to infectious diseases in humans.. Infection – transmission, entry/invasion after evading/overcoming defense, establishment, and replication of disease-causing microscopic organisms (pathogens) inside a host organism, and the reaction of host tissues to them and to the toxins they produce.
Hepatitis A. What it is: A highly contagious liver infection caused by the hepatitis A virus. Exposure typically happens when people come into close contact with an infected person, as well as ...
An ongoing outbreak of hepatitis A — a very contagious liver infection caused by the hepatitis A virus (HAV) — has now been linked to frozen strawberries and other frozen berry blends for ...
CENTER TWP. ― A Hepatitis A outbreak traced to a Beaver County restaurant 20 years ago may have led to many of the national food safety guidelines implemented in the last several years.
Fecal–oral transmission is primarily considered as an indirect contact route through contaminated food or water. However, it can also operate through direct contact with feces or contaminated body parts, such as through anal sex. [2] [3] It can also operate through droplet or airborne transmission through the toilet plume from contaminated ...
Viral hepatitis is liver inflammation due to a viral infection. [1] [2] It may present in acute form as a recent infection with relatively rapid onset, or in chronic form, typically progressing from a long-lasting asymptomatic condition up to a decompensated hepatic disease and hepatocellular carcinoma (HCC).
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