A few years ago, chickens were dying right- and left on farms with a disease called range paralysis, fowl paralysis and various technical names. At that time we little understood the disease—its cause or what to do about it. Probably in the last 10 years this disease has caused more losses to the poultry raiser than any other single disease of adult poultry.
Lee, C. D. and Maw, A. J. G.
"The Fowl Leukosis Battle,"
Farm Science Reporter: Vol. 2
, Article 3.
Available at: https://lib.dr.iastate.edu/farmsciencereporter/vol2/iss3/3