. Activities handbook. Veterinary medicine. LABORATORY DIAGNOSES OF VESICULAR STOMATITIS Count,rt. Jonuory 1 - D*i*mb«r 31 1959. The epidemiology' of this Texas outbreak is comparable to that of 1949, which also started early in the season and progressed from Texas and Arizona into Colorado, Utah, Wyoming, and Wisconsin before it stopped in the fall. The possible reservoirs of infection and vectors remain unknown. The infection frequently spreads from the Carolina-Georgia and Louisiana-Mississippi endemic coastal plain areas northward into Virginia, West Virginia, and Maryland. Anaplasmosis. •
. Activities handbook. Veterinary medicine. LABORATORY DIAGNOSES OF VESICULAR STOMATITIS Count,rt. Jonuory 1 - D*i*mb«r 31 1959. The epidemiology' of this Texas outbreak is comparable to that of 1949, which also started early in the season and progressed from Texas and Arizona into Colorado, Utah, Wyoming, and Wisconsin before it stopped in the fall. The possible reservoirs of infection and vectors remain unknown. The infection frequently spreads from the Carolina-Georgia and Louisiana-Mississippi endemic coastal plain areas northward into Virginia, West Virginia, and Maryland. Anaplasmosis. •— Serological diagnosis of anaplasmosis of cattle is another activity of the Beltsville laboratory. Interest in the pos- sibility of establishing a control program for this disease is increasing. Since the Agricul- tural Research Service is no longer in a posi- tion to produce anaplasmosis antigen in its own laboratories, a cooperative agreement has been established for its production at the Texas Agricultural Experiment Station. Two million test doses of anaplasmosis com- plement-fixation antigen were delivered to the Division's Beltsville laboratory on June 7, 1960, by the Texas A & M College. This delivery completed phase I of the cooperative project between the Division and Texas A & M College for the production of anaplasmosis antigen. The antigen is now available for distribution to cooperating laboratories. Under phase II, another 2 million test doses are scheduled for delivery by June 30, 1961. The Beltsville laboratory is responsible for distributing antigen, complement, standard sera, and other diagnostic materials related to performance of the complement-fixation test for anaplasmosis in the various field labora- tories. It also maintains general supervision of testing efficiency and accuracy of the 16 Fed- eral, State, or University laboratories engaged in the testing of serum for anaplasmosis. A composite report of the results on a large number of unkn
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