Uh... not quite. The article is talking about eastern Europe, not western Europe. More likely than not, these are the eastern Europeans who migrated to western Europe as their countries joined the Schengen Area in pursuit of employment. They traveled west, engaged in relaxed sexual activity, and came back in 2010 only to then develop STD's that their native countries medical system didn't have the means to effectively tackle. Seeing as the normal gestation period for HIVAIDS is eight years, this explosion in infected is actually right on time and further validates the Russian government warning their population from having sex with foreigners.