Table 1.

Sample demographic and clinical characteristics (N = 61)

	FLU-PRO Symptomatic (N = 61)
Demographic
Age at inoculation/enrollment, Mean (SD)	28.7 (6.5)
Median (Min-Max)	27.0 (18–47)
Gender, n (%)
Male	28 (45.9%)
Race, n (%)
Asian	4 (6.6%)
Black	24 (39.3%)
White	33 (54.1%)
Ethnicity, n (%)
Hispanic or Latino	7 (11.5%)
Not Hispanic or Latino	54 (88.5%)
Clinical
HAI Titer, n (%) Low < 1:40	39 (63.9%)
NAI Titer, n (%) Low < 1:40	10 (16.4%)
HAI-NAI Correspondence
high HAI-high NAI, n (%)	22 (36.1%)
high HAI-low NAI, n (%)	0 (0%)
low HAI-high NAI, n (%)	29 (47.5%)
low HAI-low NAI, n (%)	10 (16.4%)
Viral shedding, n (%) Yes	37 (60.7%)
Number of days with symptoms, Mean (SD)	5.7 (6.8)
Median (Min-Max)	5.0 (0–50)
Number of days with shedding, Mean (SD)	2.0 (2.4)
Median (Min-Max)	1.0 (0–8)