title: Facial cellulitis induced in chickens by Mycoplasma gallisepticum bacterin and its treatment.
abstract: Ten-to-14-day-old replacement chickens were vaccinated subcutaneously in the neck with a Mycoplasma gallisepticum bacterin. A few days later, 40% of the flock developed cellulitis of the head. Birds were submitted for diagnostic investigation between 4 and 6 wk of age. Histology revealed lesions in the subcutis consistent with oil-emulsified vaccine/bacterin reaction. No significant bacteria were isolated from the lesions. Birds were treated with 1 mg of methyl prednisol acetate intramuscularly. Improvement was noted as early as 12 hr posttreatment. One week after treatment only 1%-2% of the flock still had facial cellulitis.
authors.affiliation: California Animal Health and Food Safety Laboratory System-Fresno Branch, University of California, Davis, 2789 S. Orange Avenue, Fresno, CA 93725, USA. rmcrespo@ucdavis.edu
authors.forename: Rocio
authors.initials: R
authors.lastname: Crespo
authors.forename: Richard
authors.initials: R
authors.lastname: McMillan
mesh_terms: D000276:Adjuvants, Immunologic / Q000008:administration & dosage / Q000009:adverse effects*; D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D000893:Anti-Inflammatory Agents / Q000627:therapeutic use; D001428:Bacterial Vaccines / Q000008:administration & dosage / Q000009:adverse effects* / Q000276:immunology; D002481:Cellulitis / Q000139:chemically induced / Q000188:drug therapy / Q000662:veterinary*; D002645:Chickens; D003129:Comb and Wattles / Q000473:pathology; D007279:Injections, Subcutaneous / Q000009:adverse effects / Q000662:veterinary; D008775:Methylprednisolone / Q000031:analogs & derivatives / Q000627:therapeutic use; D000077555:Methylprednisolone Acetate; D009175:Mycoplasma Infections / Q000517:prevention & control; D045686:Mycoplasma gallisepticum / Q000276:immunology*; D009333:Neck; D011201:Poultry Diseases / Q000139:chemically induced* / Q000188:drug therapy / Q000473:pathology; D015645:Tylosin / Q000627:therapeutic use
chemical_list: D000276:Adjuvants, Immunologic; D000900:Anti-Bacterial Agents; D000893:Anti-Inflammatory Agents; D001428:Bacterial Vaccines; D000077555:Methylprednisolone Acetate; D008775:Methylprednisolone; D015645:Tylosin