SEPTICEMIA AND MENINGOENCEPHALITIS IN PASTURED CATTLE CAUSED BY A HAEMOPHILUS-LIKE ORGANISM (HEMOPHILUS SOMNUS)

  • 1 January 1977
    • journal article
    • research article
    • Vol. 67  (3) , 327-332
Abstract
Septicemia and meningoencephalitis developed in 10 pastured cattle 7 mo. to 3 yr of age. Two unrelated herds were involved. Necropsy findings were similar to those previously reported in cattle infected with a Haemophilus-like organism, including multifocal hemorrhages in some muscles, suppurative polyarthritis and multifocal hemorrhagic thrombi in the brain. A Haemophilus-like organism was isolated from 1 animal. It was characterized by growth on blood or tryptose agars plus a feeder streak under raised CO2 tension and lack of response to Haemophilus growth factors X and V.