Signs and symptoms > In swine

In pigs influenza infection produces fever, lethargy, sneezing, coughing, difficulty breathing and decreased appetite.^[11] In some cases the infection can cause abortion. Although mortality is usually low (around 1-4%),^[2] the virus can produce weight loss and poor growth, causing economic loss to farmers.^[11] Infected pigs can lose up to 12 pounds of body weight over a 3 to 4 week period.^[11]