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Hepatitis A is an infectious disease of the liver caused by Hepatovirus A (HAV); [7] it is a type of viral hepatitis. [8] Many cases have few or no symptoms, especially in the young. [ 1 ] The time between infection and symptoms, in those who develop them, is two–six weeks. [ 2 ]
In the 1960s, the first virus that could cause hepatitis was discovered. This was hepatitis B virus, which was named after the disease it causes. [220] Hepatitis A virus was discovered in 1974. [221] The discovery of hepatitis B virus and the invention of tests to detect it have radically changed many medical, and some cosmetic procedures.
A hepatitis A outbreak was one of the most widespread hepatitis A outbreak in the United States, afflicting at least 640 people, killing four people in north-eastern Ohio and south-western Pennsylvania in late 2003. The outbreak was blamed on tainted green onions at a Chi-Chi's restaurant in Monaca, Pennsylvania. [54]
Hepatitis A and B vaccine; Hepatitis A and typhoid vaccine; Hepatitis A vaccine; Hepatitis A virus; Hepatitis A virus cis-acting replication element; Hepatitis A virus internal ribosome entry site (IRES) Hepatovirus A; Human hepatitis A virus
Hendra virus infection No Hepatitis A virus: Hepatitis A: Blood tests Supportive care, liver transplantation: Yes: Hepatitis B virus: Hepatitis B: Blood tests Antiviral medication (tenofovir, interferon), liver transplantation: Yes: Hepatitis C virus: Hepatitis C: Blood testing for antibodies or viral RNA: Antivirals (sofosbuvir, simeprevir ...
In addition, a person is sometimes infected with both hepatitis B virus (HBV) and HIV, and this population (about 2.7 million) accounts for about 1% of the total HBV infections. [ 23 ] Hepatitis C : According to the World Health Organization, there are approximately 58 million people with chronic hepatitis C, with about 1.5 million new ...
HIV-2 was more similar to the then-known SIV strains than to HIV-1, suggesting for the first time the simian origin of HIV. Further studies indicated that HIV-2 is derived from the SIVsmm strain found in sooty mangabeys, whereas HIV-1, the predominant virus found in humans, is derived from SIV strains infecting chimpanzees (SIVcpz).
Hepatitis A is the most common vaccine-preventable virus acquired during travel, [15] so people traveling to places where the virus is common like the Indian subcontinent, Africa, Central America, South America, Asia, and Eastern Europe should be vaccinated. [14] [16]