Table 1.

Responder rates

IgG	4 weeks		1 year
	nasal booster	systemic booster	nasal booster	systemic booster
Serum	6/6	6/6	6/6	6/6
BALF	4/5	6/6	n.a.	n.a.
Induced Sputum	3/6	5/6	5/5	5/5
IgA	4 weeks		1 year
	nasal booster	systemic booster	nasal booster	systemic booster
Serum	6/6	6/6	6/6	6/6
BALF	1/5	3/6	n.a.	n.a.
Induced Sputum	4/6	3/6	5/5	5/5

Responder rates for OprF-OprI-specific IgG (left part of the table) and IgA (right part) antibody formation in serum, pooled bronchoalveolar lavage fluid (BALF), and supernatant of induced sputum (IS) 4 weeks and 1 year after the vaccination. For vaccination schedule refer to Figure legend 1. An antibody response was considered positive, if the post-vaccination ELISA unit was 50% or more above the individual pre-vaccination level. Data are given numbers of individuals with positive response vs. the total number of vaccinees of this group. n.a. = not applicable, since BAL was performed at 4 weeks only.