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> The only way to identify otherwise apparently healthy carriers of HIV is
> through a blood test. No country that I can think of, with the possible
> exception of China, has the means or the will to carry through the kind
> of program of identification and segregation of carriers that would even
> make a dent in the epidemic.
It was proposed, quite earnestly, early in the public history of AIDS in
Sweden. While there was the obvious outcry arguing based on human rights,
I'm convinced the proposal died for quite another reason: There simply is
no way to achieve statistically valid results at current non-African
levels of prevalence - the usual hypothesis-testing dilemma of balancing
false-positives vs false-negatives. Currently, an "AIDS test" actually is
two tests in sequence, with carefully balanced error rates. Of course, you
can tolerate substantial false-positive rates for things such as blood
and blood products, but they are another issue.
Jan
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