Research Article

Clinical Impact of Infection with Pandemic Influenza (H1N1) 2009 Virus in Naïve Nucleus and Multiplier Pig Herds in Norway

Table 2

Proportion of animals showing clinical signs of influenza like various age groups ( = number of herds, CI = confidence interval).

Min. % Max. % Mean %95% CI
LowerUpper

Sows ( )1010043.328.458.2
Piglets ( )105024.614.634.6
Weaners ( )10804118.163.9
Growers, finishers, recruit sows ( )4652712.341.7