Which is true concerning hepatitis B? (Select all that apply.)
a. Hepatitis B cannot exist in carrier state.
b. Hepatitis B can be prevented by HBV vaccine.
c. Hepatitis B can be transferred to an infant of a breastfeeding mother.
d. Onset of hepatitis B is insidious.
e. Principal mode of transmission for hepatitis B is fecal-oral route.
f. Immunity to hepatitis B occurs after one attack.
ANS: B, C, D, F
The vaccine elicits the formation of an antibody to the hepatitis B surface antigen, which is protective against hepatitis B. Hepatitis B can be transferred to an infant of a breastfeeding mother, especially if the mother's nipples are cracked. The onset of hepatitis B is insidious. Immunity develops after one exposure to hepatitis B. Hepatitis B has a carrier state. The fecal-oral route is the principal mode of transmission for hepatitis A. Hepatitis B is transmitted through the parenteral route.
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