Table 2.

4thG staging distinguished two groups of Fiebig stage I acute HIV infection subjects

Characteristics of Fiebig I subjects (n=25)	4thG stage 1	4thG stage 2	P value
	(n=18)	(n=7)
HIV RNA, log10copies/ml	4.6	5.7	0.005
HIV DNA, copies/106 PBMC	7	312	0.002
Duration since history of HIV exposure, days	12.5	17	0.06

Abbreviation: PBMC peripheral blood mononuclear cells.