VivaGel™ in Healthy Young Women

Inclusion Criteria: * Subject has voluntarily given written informed consent to participate in the study. * Subject is female and aged between 18 and 24 years, inclusive. * Subject is sexually active. * Subject should have a menstrual cycle length of at least 25 days. * Subject is in good health, as determined by medical history, a baseline physical examination, and clinical laboratory tests. * Subject agrees to comply with all study procedures. * Subject has no significant abnormal vaginal microflora (abnormal flora defined as Nugent score greater than or equal to 7) at screening. * Subject has a negative urine pregnancy test at screening and enrollment. * Participant must agree to abstain from all sexual activities involving intercourse or other forms of vaginal penetration 7 days prior to the Enrollment Visit through the completion of all follow-up visits and procedures. Exclusion Criteria: * Subject has received or is anticipated to receive a new prescription systemic or topical medication within 14 days prior to the start of dosing. Subjects may be enrolled if stable on existing therapy as determined by the Principal Investigator. * Subject has received any new long-acting treatments \[e.g. depot formulation including medroxyprogesterone acetate (DMPA) form of hormonal birth control\]. Subjects may be enrolled if stable (greater than 3 months) on existing therapy as determined by the Principal Investigator. * Subject has received an investigational drug within 30 days or 10 half-lives of the drug, whichever is longer, prior to entering this study, or is planning to receive another investigational drug while participating in this study. * Subject has a history of significant drug allergy. * Subject has a history of latex allergy. * Biological and hematological parameters are outside of the laboratory's normal reference ranges. Subjects with grade 1 laboratory abnormalities can be included if the Principal Investigator judges that the deviations are not clinically relevant. * Subject has a clinically significant history of systemic allergic disease (e.g., clinically significant urticaria, clinically significant atopic dermatitis). * Subject has a history of recurrent vaginal infections, irritation or localized reaction to vaginally applied agents. * Subject has an unpredictable or irregular menstrual cycle that will not allow scheduling of the colposcopic examinations outside menstruation as required for the protocol. * Subject has a recent (within 3 months) history of intermenstrual bleeding. * Subject has an active, uncontrolled medical condition (e.g., neurological, gastrointestinal, renal, hepatic, cardiovascular, pulmonary, metabolic, endocrine, hematological, genitourinary or other major disorder), or psychiatric illness (e.g., depression, schizophrenia). * Subject had a clinically significant illness within 30 days prior to screening. * Subject has used a vaginal preparation within 30 days prior to screening. * Subject has a clinically detectable genital abnormality (i.e. vulvar, vaginal, cervical, perianal ulcer and/or deep epithelial disruption). * Subject has signs, as seen on pelvic exam, consistent with an Sexually Transmitted Infection (STI), other genital tract infection - other than bacterial vaginosis (BV) - or trauma, including but not limited to: vaginitis, cervicitis, and laboratory findings indicative of genital tract infection other than asymptomatic BV. Note: Signs of asymptomatic BV include the presence of white to grey homogeneous discharge, positive whiff test (amine odor) with addition of KOH, pH\>4.5, presence of clue cells, decrease in lactobacilli morphotypes, and increase in non-lactobacilli morphotypes. Women with clinical or gram stain evidence of BV and symptoms (discharge, odor, itching), or yeast colonization and symptoms at screening should be treated and re-evaluated for inclusion. Women without BV symptoms, but who have clinical or gram stain evidence of BV, or asymptomatic yeast colonization, are eligible. * Subject tests positive for serum antibodies to human immunodeficiency virus 1 and/or 2 (HIV-1 and/or HIV-2). * Subject tests positive for serum antibodies to herpes simplex virus, type 2 (HSV-2). * Subject tests positive for Chlamydia, gonorrhea, trichomonas, syphilis or a urinary tract infection at screening or enrollment. Note: Women who have an STI or are symptomatic and have a positive urine culture (urinary tract infection - UTI) at screening will be referred for and/or given treatment. Following completion of treatment, women with a negative repeat test may be reconsidered for study participation. * Subject has an abnormal Pap smear at screening. * Subject has history in the last three months of: an IUD, vaginal contraceptive ring, a pregnancy, cervical cryotherapy or laser therapy, gynecologic surgery. * Subject is currently breast feeding or is planning on breast feeding while participating in this study. * Subject, in the opinion of the Principal Investigator, should not participate in the study. * Women with colposcopic evidence of deep epithelial disruption at the enrollment visit will be excluded. In addition, based on the investigator's (medical examiner's) opinion any colposcopic finding or any finding (normal or abnormal) that could interfere with colposcopic examinations may also lead to exclusion. In this case, the investigator may have the subject return within the screening window to determine if the abnormality has cleared, and if she is eligible for enrollment.