for more information, try entries liek the
following in a search engine:
Aids dry sex
or
hot, tight and dry
go to WHO.org and search that site
try to find peer-reviewed scientific articles in reputable journals
some links I found after a very quick search:
http://www.hrw.org/reports/2003/africa1203/6.htm
http://www.cirp.org/library/disease/HIV/sandala1/
http://www.avert.org/aids-africa-questions-1.htm
http://www.who.int/mediacentre/factsheets/fs247/en/
http://www.rho.org/html/hthps-b-02.html
http://www.alertnet.org/thefacts/reliefresources/aidsfeature.htm