Generally, this period lasts three to five years, but because the medical history of the disease is brief, scientists are still observing to see how long the disease may incubate.
一般來說，潛伏期是三至五年，但由於這種新病「歷史」還很短，病毒究竟能潛伏多久，醫學界還在觀察中。（二）「愛滋相關綜合症」（ARC）期。