 Menstrual cycle 2: Immunisation visits There will be 9 immunisation visits, on successive Mondays, Wednesdays and Fridays. The 1st of these visits will be about 7 days after the start of menses. At the 1st, 4th and 9th immunisation visits, blood and urine will be collected for routine laboratory safety and pregnancy tests, and blood collected for immunology tests. Subjects will also have a cervico-vaginal examination, and their temperature, blood pressure and heart rate measured, before self-administering the vaccine. 