Causes and Symptoms
The causes of Hepatitis A mainly relate to contaminated items of consumption, like food and water. There are various symptoms, like fever, fatigue, loss of appetite, nausea, vomiting, abdominal pain, dark urine, clay-colored bowel movements, joint pain, jaundice (a yellowing of the skin or eyes).
During the immune response, T Cells (cells that kill anything that is not one of its own) alert the B Cells, which then create antibodies to destroy the hostile cell.
Prevention and Treatment
Their are vaccines used to prevent Hepatitis A. Good hygiene will also prevent it. If you get it, the doctor can provide medication for it. You are usually recommended to get rest, adequate nutrition, and lots of fluids.
In order to replicate, Hepatitis A uses the lytic cycle. First, the virus attaches itself to the host cell and injects its DNA. Next, the viral DNA circularizes, so that there are no exposed DNA ends. After that, new viral DNA and proteins are assembled. Finally, the cell bursts and releases the viral DNA.