FIG 4.

H7 viruses replicated in the lungs and showed limited replication in the brains of infected mice. (A) All viruses replicated in the lungs of inoculated mice. The mean viral lung titers of both duck (Anseriformes) and shorebird (Charadriiformes) origin viruses were similar. (B) Viral replication in the brain was limited to nine mice inoculated with duck origin viruses and seven mice inoculated with shorebird origin viruses, and titers were relatively low compared to lung viral titers. Error bars indicate SEM.