If you would like to have a risk assessment, please contact a regional AIDS centre or a Checkpoint (for men who have sex with men and Trans*). Testing and Counselling Counselling | TestingCenters

You can reach the office of the Swiss AIDS Federation as follows: 

Aids-Hilfe Schweiz
Freilagerstrasse 32
8047 Zürich

+41 (0)44 447 11 11 
aids@aids.ch