Window period
What is the "window-period" and how long is it?
This is the time between original infection with HIV and the appearance
of Detectable antibodies to the virus, normally a period of about 14-21
days.
我不知道你的资料是哪里的 我看到的是WHO世界卫生组织的资料
初始感染会在第14-21天产生基本上可以检测到的抗体。
http://www.who.int/diagnostics_laboratory/faq/window_period/en/