<http://hiv-aidsawareness.blogspot.com/>:

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AIDS is defined by the Centers for Disease Control and Prevention
(CDC) as the presence of a positive HIV antibody test and one or more
of the illnesses known as opportunistic infections.

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Or a CD4 count lower than 200.  Gotta keep those case numbers up
somehow.

Getting AIDS is easier in the US than anywhere else outside the third
world.