("Flu" and "Grippe" redirect here. More

Haemophilus influenzae (formerly called Pfeiffer's bacillus or Bacillus influenzae) is a Gram-negative, coccobacillary, facultatively anaerobic pathogenic ba... More

Avian influenza — known informally as avian flu or bird flu — refers to "influenza caused by viruses adapted to birds. More

Swine influenza, also called pig influenza, swine flu, hog flu and pig flu, is an infection caused by any one of several types of swine influenza viruses. More

Equine influenza (horse flu) is the disease caused by strains of influenza A that are enzootic in horse species. More

Cat flu is the common name for a feline upper respiratory tract disease. More