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HIV Transmission and Education >> Am I Infected?

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Anonymous
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Window Period
      #43328 - 11/08/02 08:44 PM

CDC MMWR

Revised Guidelines for HIV Counseling, Testing, and Referral November 9, 2001 / 50(RR19);1-58

Most infected persons will develop detectable HIV antibody within 3 months of exposure. If the initial negative HIV test was conducted within the first 3 months after exposure, repeat testing should be considered >3 months after the exposure occurred to account for the possibility of a false-negative result. If the follow-up test is nonreactive, the client is likely not HIV-infected. However, if the client was exposed to a known HIV-infected person or if provider or client concern remains, a second repeat test might be considered >6 months from the exposure. Rare cases of seroconversion 6--12 months after known exposure have been reported (134). Extended follow-up testing beyond 6 months after exposure to account for possible delayed seroconversion is not generally recommended and should be based on clinical judgment and individual clients needs.

March 01, 1996 / 45(RR-2);1-9

When whole-virus-lysate enzyme immunosorbent assays (EIAs) were used to screen blood donations from 1985 through 1990, the average length of the window period was 45 days (95 confidence interval {CI}=34- 55 days) (3). The average window period of the most sensitive contemporary recombinant protein-based EIA for HIV-1 and HIV-2 antibodies is now 20 days less (4), yielding an average infectious window period of 25 days (95 CI=9-41 days) (5).




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Anonymous
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thanks 4 this info new
      #43457 - 11/10/02 11:05 AM

to who ever posted this window period info -
thank you.



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