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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 2003, Chi-Chi's, a popular Mexican restaurant chain in Beaver Valley Mall, Center Township, experienced a severe Hepatitis A outbreak that resulted in widespread illness and fatalities.
Hepatitis D is a defective virus that requires hepatitis B to replicate and is only found with hepatitis B co-infection. [17] In adults, hepatitis B infection is most commonly self-limiting, with less than 5% progressing to chronic state, and 20 to 30% of those chronically infected developing cirrhosis or liver cancer. [31]
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
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).
Hepatitis E, the report added, can cause severe illness, especially in those with underlying health conditions, and can lead to cirrhosis of the liver and neurological damage