An outbreak of brucellosis on a dairy farm and its subsequent treatment are documented. Brucellosis most often attacks fetal calves, killing them in utero and resulting in abortion. It spreads quickly among cows. In human beings, the disease is called undulant fever. When an animal is found to be infected, it is isolated from the herd. The aborted calf should be buried where it can not be dug up by dogs or other predators, and where it can not contaminate the soil. Lime should be spread on the calf's grave and on the spot where it was found dead. Tools, shoes, everything used in handling the calf should also be disinfected. All the cows in the herd must now be tested for brucellosis. All infected cows mustbe slaughtered as there is no cure for the disease. Remaining healthy cows are vaccinated with Strain 19 against the disease. The premises are thoroughly cleaned to get rid of remaining microorganisms. Shots include: Cows in a pasture; farm buildings; the inside of a barn; cows being driven into a barn; a man attaching electric milkers to a cow; micrograph of Brucella abortis; scientists in a USDA laboratory; Dept. of Agriculture building in Washington, D.C.; drawings illustrating the Brucella infection of a cow and her unborn calf; cow in a field with her dead calf; farmers spreading lime on contaminated areas; veterinarian testing cows for brucellosis out of a portable laboratory kit; veterinarian drawing bloodfrom the jugular veins of cows; agglutination tests being done in a laboratory; calf being injected with vaccine; laboratory at the Bureau of Animal Industry in Beltsville, Maryland with women packing vials of vaccine; cleaning the barn withdisinfectant; brucellosis eradication certificate.
Copyright:
The National Library of Medicine believes this item to be in the public domain. (More information)
Extent:
019 min.
Color:
Color
Sound:
Sound
Credits:
Subject matter, Elmer Lash ; script, R.N. Newton ; camera, George Ortlieb ; sound, Reuben Ford ; direction, Walter K. Scott.
Provenance:
Received: (date unknown) as a donation from USPHS.