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Abstract

L. icterohaemorrhagiae was isolated by inoculation of guineapigs with heart blood, kidneys, liver and stomach contents of an aborted calf.
Sera from 279 cattle in 14 herds were tested and 79 gave positive results to one or more of the serotypes icterohaemorrhagiae, grippotyphosa, pomona, carneola...

Author(s)
Santa Rosa, C. A.; Pestaña de Castro, A. F.; Troise, C.
Publisher
S. Paulo,
Citation
Archivos do Instituto Biologico, Sao Paulo, 1961, 28, pp 113-118; 169-173
Abstract

Of 332 samples from suspect herds 92 agglutinated Leptospira pomona at 1: 20 and 1: 320; of 163 samples from non-suspect herds 4 reacted. Lesions in aborted foetuses are described. Leptospira was isolated from blood, gastric contents and exudates of 9 foetuses and was transmitted to guineapigs on 6 ...

Author(s)
Lacerda, P. M. G., Jr.; de Freitas, D. C.; Lacerda, J. P. G.
Publisher
S. Paulo,
Citation
Archivos do Instituto Biologico, Sao Paulo, 1960, 27, pp 87-91
Abstract

Foot and mouth disease virus. Type A. was rendered avirulent by 28 passages in day old chicks or 12 in embryonated eggs. These strains, were non-pathogenic, had good antigenicity and did not spread by contact. In field trials with the chick embryo strain immunity lasted at least eight months....

Author(s)
NóBrega, P.
Citation
Biologico, 1963, 29, pp 149-163

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