Table 1.

Characteristics of the volunteers

	Healthy volunteer	Healthy volunteer
	Saline controls (n = 7)	LAIV (n = 10)
Age, mean (range)	21.3 (18–25) years	23.8 (18–32) years
Gender (% female)	23.5 %	29.4 %
Student (%)	100 %	70 %
Nose-picking
Never	14.3 %	20 %
Weekly	71.4 %	50 %
Daily	14.3 %	30 %

Values noted are means with ranges expressed for the age. In addition to that noted above, all volunteers had no recent smoking history, did not swim, predominantly showered rather than bathed, and used no probiotics or antibiotics within 90 days of enrollment