| http://www.w3.org/ns/prov#value | - This usually is caused by the presence of antibodies to other diseases that the ELISA mistakenly recognizes as antibodies to HIV. For this reason, it is important to supplement both positive ELISA and rapid antibody results with a confirmatory test, such as a Western blot, that is less sensitive but more specific, that is, one that has a lower rate of yielding a false-positive result.
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