a lot of researches showed that condoms prevent infection. That is scientific evidence, isn't it?
http://www.niaid.nih.gov/about/organization/dmid/documents/condomreport.pdf
so could you tell me how you can relate science to this??
"people say" vs. "test results" - it is always a great debate. It is the same like with oral - you will find a lot of peer reviews with "oral sex transmission" but no scientific data. You can believe whatever you like, but I will stick to the science.
latex condom do prevent infection as long as there was no condom failure