In article <3dd65s$ic1 at serv.hinet.net>, roger at hntp2.hinet.net (roger) writes:
>greenera at wmvx.lvs.dupont.com wrote:
>: >can anybody explain this char for me?
>: > ¢x ... .
>: > ¢x . . --- - .
>: > ¢x . . - - ...
>: > ¢x . --.- - .
>: > ¢x . -- . -..
>: > ¢x . -- . .. - .HIV virus
>: > ¢x+.++-+++++++++.++++++..++++++-++++ -Antibody
>: > ¢x. - ...... -- +limit
>: > ¢|¢w¢w¢w¢w¢w¢w¢w¢w¢w¢w¢w¢w¢w¢w¢w¢w¢w
>: > 1 2 3 4 5
>: >you can email me at: roger at c2.hinet.net>: >
>: I think your chart shows the progression of an AIDS patient. Soon after inf
>>thank you very much..
>does that mean a window period?
>well, can you show me where the window period is on the chart?
>1-2 or 3-4 or 4-5?
The window period would be 1-2. The term refers to the time when
the patient's blood does not yet contain antibody, so reacts
negative in an antibody screening test. However, at this time
an infected person's blood does contain virus and can be infectious.
Improved sensitivity of antibody tests, use of p24 antigen tests,
etc. have led to a decrease in the duration of the window period,
down to as little as 1-2 weeks in some estimates.