http://www.efusion.com.sg/ephotos/snapshots/sex%20trade/websites.htm
The girls are required to go for periodic AIDS and other STD
checks. However, the window period (when AIDS infection cannot be
detected) that has resulted in two Singaporeans catching AIDS from
blood transfusions applies to these prostitutes too. You also have
to realise that the popular girls fuck more than 7 or 8 customers a
day. If you happen to dip your dick into a pussy that is still
dripping with AIDS infected sperm, no sporadic health checks are
going to save your life.