Reply #2: Your post confuses and concerns me.

[Igel]

Does it mean that the Mexican migrants can't possibly have higher rates of HIV infection?

Or does it mean that we shouldn't do the research to find out?

Or, if they do, we shouldn't bother to say it in polite company? In that case, do we allow it to be mentioned at conferences and in journals that the MSM might possibly peruse? Do we allow the research community to discuss it? Or do we expect the researchers that produce the number try to deal with it?

Of greater concern is not reporting the confidence interval: I assume 95%, but the number of positives was low, and the methodology wasn't described.

And of possibly even greater concern is this paragraph:
"A separate study of migrants in their home states in Mexico found the rate of infection was even higher, at 1.1 percent, compared to 0.3 percent among the general Mexican population."