Research Article

Immunogenicity and Cross Protection in Mice Afforded by Pandemic H1N1 Live Attenuated Influenza Vaccine Containing Wild-Type Nucleoprotein

Table 1

Protection of mice against challenge with H1N1 wild-type viruses following immunization with LAIV H1N1.

Vaccine Challenge virus
 A/South Africa/3626/2013 (H1N1)  A/New York/61/15 (H1N1)  A/PR/8 7 : 1 rg (NP-SA) (H1N1)
Number died/total% maximum weight lossMean virus titer in lungs,
log10EID50/ml
Number died/total% maximum weight lossMean virus titer in lungs,
log10EID50/ml
Number died/total% maximum weight lossMean virus titer in lungs,
log10EID50/ml

LAIV 6 : 20/618.30/65.90/69.0
LAIV 5 : 30/62.80/62.80/63.3
Control5/626.96/613.82/63.6

significant at .