 - Sexually active females, unless surgically sterile or at least 1 year post-menopausal, must have used an effective method of avoiding pregnancy including oral, implanted, or transdermal contraceptives, intrauterine device IUD, female condom, diaphragm with spermicide, cervical cap, abstinence, use of a condom by the sexual partner or sterile sexual partner for at least 30 days prior to dosing of study vaccine, and must agree to continue using such precautions for at least 30 days after dosing; the volunteer must also have a negative serum pregnancy test within 7 days prior to dosing of study vaccine and a negative urine pregnancy test on the day of study vaccine dosing prior to administration 