Figure 1. N. brasiliensis infection protects from death from K. pneumoniae-mediated septic peritonitis.

C57BL/6 mice (WT) or C57BL/6 mice infected with N. brasiliensis (A) 2 or (B) 4 weeks earlier (Nippo mice) were injected with 150 CFU of K. pneumoniae i.p. and survival was monitored. Mice infected with N. brasiliensis 2 but not 4 weeks before bacterial infection are more likely to survive septic peritonitis than unparasitized control mice. (n = 25 mice/group, **P = 0.0018).