The most common cause of liver cancer in the United States is

Syphilitic tumors called _____ develop in the liver, skin, bone, and cartilage during the tertiary stage of syphilis.

The causative organism for mumps is

The most common causative agent of urinary tract infections

This opportunist is the most frequent cause of life-threatening pneumonia in AIDS patients:

Malaria may be prevented by

The most common reported STD in the United States is

Most cases of septicemia are caused by

Cholera symptoms are

The most common causative agent of otitis media is