In the U.S. PrEP is now a political issue about getting full ACCESS to high risk people.

Again, talking here about Truvada or generics take DAILY to PREVENT HIV infection. Not the same thing as POST-EXPOSURE meds.

This still doesn't seem to be taking off in Thailand.

So my question is why?

Apparently based on another thread GENERIC Truvada here is available at a cost of 1 to 3 U.S. dollars a day. That's not bad at all.

It seems to me it is both a humane and economic benefit to get PrEP to all high risk people that want to take it, in Thailand, and globally.

The prevention rate when used properly is over 99 percent.

As far as the politics on the U.S. Contrary to what some might think, the U.S. doesn't have universal health care. It's a complex web and money still matters:

http://www.thebody.com/content/75532/prep-in-the-spotlight-sound-bites-from-creating-ch.html

PrEP Is a Social Justice Issue

Access to PrEP is dependent on having affordable health insurance and a prescription from a medical provider. While health care reform is expanding access to health care for many people, navigating the system to find a health plan that fits PrEP needs and a person's budget can be challenging. Even with insurance, high out-of-pocket drug costs have the potential to make PrEP unaffordable. In addition, some providers are still resistant to prescribing this life-saving medication to their patients. As a result of these health care disparities, oftentimes communities most vulnerable to HIV are not able to fully benefit from PrEP.

Responsible behaviour is cheaper than $21+/week.

What's that supposed to mean?

First case of PrEP failing:

It’s been nearly two years since the Centers for Disease Control and Prevention issued historic guidelines recommending that thousands of Americans — particularly gay and bi men, transgender women, injection drug users, and partners of HIV-positive people — start taking Truvada as pre-exposure prophylaxis (or PrEP) to prevent HIV infection.

http://www.advocate.com/hiv-aids/2016/2/26/first-man-become-hiv-positive-while-prep-rare-exception

First case of PrEP failing:

It’s been nearly two years since the Centers for Disease Control and Prevention issued historic guidelines recommending that thousands of Americans — particularly gay and bi men, transgender women, injection drug users, and partners of HIV-positive people — start taking Truvada as pre-exposure prophylaxis (or PrEP) to prevent HIV infection.

http://www.advocate.com/hiv-aids/2016/2/26/first-man-become-hiv-positive-while-prep-rare-exception

The "risk" of this happening was always present.

As I observed before responsible behavior provides greater and more assured "protection ".