A 70-Year-Old Woman Presents with Complaints of Fatigue, Nausea, Fever

A 70-year-old woman presents with complaints of fatigue, nausea, fever, anorexia, and abdominal pains. Her travel history shows that she is recently back from a trip to western and central rural Mexico where she ate what everyone else was eating, including raw oysters from the coast. Physical examination shows a yellow tinge to her eyes, and her urine is dark. Lab studies show elevated liver enzymes. Blood cultures are negative for Vibrio vulnificus. Hepatitis serologies are: Antibody to hepatitis A virus: positive IgM antibody to hepatitis B core antigen: negative IgG antibody to hepatitis B core antigen: positive IgM antibody to hepatitis B surface antigen: negative IgG antibody to hepatitis B surface antigen: positive HBsAg: negative What is most likely causing her current problems?

A) Hepatitis A
B) Hepatitis B
C) Hepatitis C
D) Vibrio vulnificus
E) Vibrio cholerae