A 51-year-old man health care worker whom you examine for the first time feels well. You do a complete physical examination, which is normal except for slight overweight and borderline hypertension. It is interesting that his laboratory studies show the following hepatitis B virus profile: positive HBsAg, negative anti-HBs, low levels of IgG anti-HBc, positive anti-HBeAg, and negative anti-HBe. The likely diagnosis is
a. Acute HBV infection, high infectivity
b. Late-acute HBV, low infectivity
c. Recovered from HBV infection
d. Chronic HBV infection, high infectivity
e. Immunization with HBsAg vaccine