Now someone has posted this:
HIV/AIDS Epidemic In Tijuana. The warning signs are becoming more evident in part because of the city's growing number of infected sex workers. Aids is increasing at an Alarming Rate.
UCSD School of Medicine indicates that the rate of HIV/AIDS infection in Tijuana, Mexico is increasing, and much higher than had been previously estimated. The findings are based on data compiled by a team of researchers working in San Diego and Mexico to create a population-based model in order to estimate HIV infection rates.
High-risk groups include injection drugs users and female sex workers in Tijuana.
Data in this study suggest that Tijuana's HIV infection rate may be close to three times higher than Mexico's national average. The United Nations AIDS Program considers an HIV epidemic when more than 1% of the population is infected.
The model used in the study suggests that injection drug use and female sex trade are driving the HIV epidemic in Tijuana.
Only half of female sex workers and one third of injection drug users in Tijuana have ever had an HIV test.
Most workers in Tijuana who are working with a Pimp are infected since they are usually obligated to have unprotected sex with clients.
The question is, DO YOU WANT TO TAKE THE RISK?
Be careful with your selections and always use "PROTECTION", it's not worth your life or your families.

I seem to recall some talk when the story came out a year ago.

This report has been out for awhile; it comes  from a group seeking funds.  Notice it doesn't mention a HIV rate.  That's because the HIV rate in TJ is the same as NYC--a far cry from the high rates of Africa or even SE Asia.