Final answer:
The antibody indicating recent HAV infection is IgM-HAVAb, which is detectable shortly after infection and usually persists for a few months.
Step-by-step explanation:
The antibody that indicates a recent infection with hepatitis A virus (HAV) is IgM-HAVAb. When a person is first infected with HAV, their immune system produces IgM antibodies against the virus.
These IgM antibodies can be detected shortly after the initial infection and typically persist for several months, signaling an acute or recent infection.
Over time, IgG-HAVAb antibodies will replace IgM antibodies and can remain in the body for years, indicating past infection and immunity to the virus.
It's important to note that the presence of HBsAb, HBeAb, HBcAb would indicate infection with hepatitis B, not hepatitis A.