Abstract
Adult cows from an Anaplasma marginale-infected herd that were negative to the A marginale rapid card agglutination (RCA) and complement fixation (CF) tests for 1 to 4 years developed acute anaplasmosis after inoculation with 0.5 ml of blood from an A marginale carrier cow. The test cattle were as susceptible as the control cattle of similar ages. Also, 2 cows that had seroconverted from RCA/CF-positive to RCA/CF-negative status naturally were fully susceptible to anaplasmosis when they were experimentally infected. Results of the study indicated that indigenous seronegative cattle in anaplasmosis-enzootic regions probably do not have acquired or natural immunity to A marginale infection.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 171-173 |
| Number of pages | 3 |
| Journal | Journal of the American Veterinary Medical Association |
| Volume | 190 |
| Issue number | 2 |
| State | Published - Jan 15 1987 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- veterinary(all)
Cite this
Bovine anaplasmosis : susceptibility of seronegative cows from an infected herd to experimental infection with Anaplasma marginale. / Lincoln, S. D.; Zaugg, J. L.; Maas, John.
In: Journal of the American Veterinary Medical Association, Vol. 190, No. 2, 15.01.1987, p. 171-173.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Bovine anaplasmosis
T2 - susceptibility of seronegative cows from an infected herd to experimental infection with Anaplasma marginale.
AU - Lincoln, S. D.
AU - Zaugg, J. L.
AU - Maas, John
PY - 1987/1/15
Y1 - 1987/1/15
N2 - Adult cows from an Anaplasma marginale-infected herd that were negative to the A marginale rapid card agglutination (RCA) and complement fixation (CF) tests for 1 to 4 years developed acute anaplasmosis after inoculation with 0.5 ml of blood from an A marginale carrier cow. The test cattle were as susceptible as the control cattle of similar ages. Also, 2 cows that had seroconverted from RCA/CF-positive to RCA/CF-negative status naturally were fully susceptible to anaplasmosis when they were experimentally infected. Results of the study indicated that indigenous seronegative cattle in anaplasmosis-enzootic regions probably do not have acquired or natural immunity to A marginale infection.
AB - Adult cows from an Anaplasma marginale-infected herd that were negative to the A marginale rapid card agglutination (RCA) and complement fixation (CF) tests for 1 to 4 years developed acute anaplasmosis after inoculation with 0.5 ml of blood from an A marginale carrier cow. The test cattle were as susceptible as the control cattle of similar ages. Also, 2 cows that had seroconverted from RCA/CF-positive to RCA/CF-negative status naturally were fully susceptible to anaplasmosis when they were experimentally infected. Results of the study indicated that indigenous seronegative cattle in anaplasmosis-enzootic regions probably do not have acquired or natural immunity to A marginale infection.
UR - http://www.scopus.com/inward/record.url?scp=0023653843&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023653843&partnerID=8YFLogxK
M3 - Article
C2 - 3818429
AN - SCOPUS:0023653843
VL - 190
SP - 171
EP - 173
JO - Journal of the American Veterinary Medical Association
JF - Journal of the American Veterinary Medical Association
SN - 0003-1488
IS - 2
ER -