Apparently, you question lacks details like a source, and I am not disputing merely requesting. 

an jing zhong guo dong xi. stop rumour-mongering with your anonymous threads directed against black people in guangdong province.

Here you go @Scan: http://www.thenanfang.com/blog/dongguan-admits-to-having-an-aids-crisis/

I find it funny that Mr. Anonymous used the same word as in the title. Although this article is about a month old and is all about rumours. And then two days later the local Dongguan government came out and denied it, of course. 

Well

 *Dongguan being famous for its large prostitutes population

 * General attitude to problem being "I put my hands on my ears, I sing loudly LALALALA and I censor if its really against common belief"
 * Prostitutes here having no protection whatsoever

Sounds like a fertile ground for AIDS. But let's see the actual data

A full blown AIDS problem you say...wow that is so much worse than an AIDs problem. Enough with the hyperbole!