Isolates of infectious laryngotracheitis which produce pneumonitis and airsacculitis.
D000400:Air Sacs; D000818:Animals; D002645:Chickens; D006564:Herpesviridae / Q000302:isolation & purification*; D006801:Humans; D007827:Laryngitis / Q000662:veterinary*; D011014:Pneumonia / Q000662:veterinary*; D011201:Poultry Diseases / Q000382:microbiology*; D014136:Tracheitis / Q000662:veterinary*