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What does it mean HBsAg positive?

It means that you have infection with HBV but to confirm whether this infection is new or old infection, you must perform teat called HB-Immunoglobin M and G.
For more confirmation of infection, you also can do PCR.

What are the symptoms of hepatitis B virus infection?

Feeling tired and debilitating
Anorexia
Nausea
Exhaustion
A slight rise in temperature
Dark urine
Jaundice

What causes HBV?

Exposure to contaminated blood
Sexual intercourse
Transfusion of contaminated blood
Use contaminated needles
Transmission of the mother to the fetus
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