Even St. Fermin can`t protect us from the damned HIV. There is an inependent body - The Anti-aids Commission - who mount a warning campaign during the Fiesta, to help prevent any new breakouts. They have a centre in Pamplona : Calderería street - 6 (Tfl. 948 21 22 57) right in the heart of the old town . They give you all the information you need and they can help you out if you feel you want to have a test done. They also hand out clean needles for used ones, for drug addicts. If you don´t have an used needle to exchange, they will sell you a new one. They also hand out preservatives but you can always make a voluntary donation if you want.
During Sanfermin it's open the 8th, 11 and 13, from 5.00 to 8.00 in the afternoon.