4. Women with child bearing potential must be non pregnant which will be confirmed by negative urine pregnancy test during screening and prior to vaccination on day 0 as well. Moreover, medical history will be taken thoroughly by study physician from the woman of childbearing age to completely exclude the probability of pregnancy.Women who are married and living with a partner must agree to use a reliable contraceptive method to prevent pregnancy until final follow-up following vaccination. However abstinence is also acceptable.