No patients that are known to be pregnant or nursing Not pregnant or nursing Pregnant or lactating women Non-pregnant and non-nursing; women and men of reproductive potential should agree to use an effective means of birth control Patients who are pregnant or nursing; to date, no fetal studies in animals or humans have been performed; the possibility of harm to a fetus is likely TREATMENT: Pregnant STEP I: The following patients will be excluded:* Pregnant women* Nursing women STEP II: The following patients will be excluded:* Pregnant women* Nursing women Pregnant women are eligible to participate in this study Patients must not be pregnant or nursing* Note: Peri-menopausal women must be amenorrheic for > 12 months to be considered not of childbearing potential Pregnant women are excluded from this study; breastfeeding should be discontinued prior to the first dose of study drug and women should refrain from nursing throughout the treatment period and for 3 months following the last dose of study drug Pregnant women are excluded from this study Pregnant women or nursing mothers Patients must be able to avoid direct contact with pregnant or nursing women, infants and immunocompromised individuals during the days of reolysin treatment and for two days after Pregnant women are excluded from this study; breastfeeding should be discontinued prior to the first dose of study drug and women should refrain from nursing throughout the treatment period and for 3 months following the last dose of study drug Pregnant women are excluded; breastfeeding should be discontinued prior to the first dose of study drug and women should refrain from nursing throughout the treatment period and for 3 months following the last dose of study drug Study drug must not be administered to pregnant women or nursing mothers Pregnant or nursing women Pregnant or nursing women Pregnant women are excluded from this study Not pregnant or nursing, with negative serum pregnancy test; pregnant women are excluded from this study; breastfeeding should be discontinued; timeline: within 3 weeks prior to enrollment Pregnant or nursing patients Pregnant women Nursing women who are unwilling to discontinue nursing Pregnant females are ineligible Pregnancy and/or nursing females Pregnant or nursing female patients are excluded from this study