Acute hepatitis B refers to newly acquired infections. Affected individuals notice symptoms approximately 1 to 4 months after exposure to the virus. In most people with acute hepatitis, symptoms resolve over weeks to months and they are cured of the infection. However, a small number of people develop a very severe, life-threatening form of acute hepatitis called fulminant hepatitis.Chronic hepatitis B is an infection with HBV that lasts longer than 6 months. Once the infection becomes chronic, it may never go away completely.

About two-thirds of people with chronic HBV infection are chronic carriers.

If you are sexually active, practice safe sex. Correct use of latex condoms can help prevent transmission of HBV, but even when used correctly, condoms are not 100% effective at preventing transmission. Men who have sex with men should be vaccinated against both hepatitis A and hepatitis B. If you inject drugs, don't share needles or other equipment. Don't share anything (including grooming products) that might have blood on it, such as a razor, toothbrush, fingernail clippers, etc. Think about the health risks if you are planning to get a tattoo or body piercing. You can become infected if the artist or person piercing you does not sterilize needles and equipment, use disposable gloves, or wash hands properly

A high-grade fever up to 104 degrees FChills and shakes with the feverExtreme tirednessHeadache and body achesDry, hacking coughSore throatVomiting and belly pain

The best way is to get a yearly vaccination. The CDC says all people 6 months and older should get one.  Healthy children over 2 years old who don't wheeze or don't have a history of asthma can get the nasal spray influenza vaccine. Otherwise, children 6 months and older should get a flu shot.Pregnant women and caregivers of children younger than 6 months or of children with certain health conditions should get the shot.

highly contagious, particularly when kids share close quarters like they do in school classrooms

respiratory disease

swine triple reassortant (tr) H1N1 influenza virustrH3N2 virustrH1N2 virus

All children at age 1, or older children who didn't receive the vaccine at age 1 Laboratory workers who may come in contact with hepatitis A Men who have sex with men People planning travel to areas of the world with high rates of hepatitis A People who use illegal drugs, injected and noninjected People who receive treatment with clotting-factor concentrates People with chronic liver disease

The hepatitis A vaccine can prevent infection with the virus. The hepatitis A vaccine is typically given in two doses