African Swine Fever by W. R. Hess (auth.), Yechiel Becker (eds.)

By W. R. Hess (auth.), Yechiel Becker (eds.)

African swine fever (ASF) is as a result of a scourge that's categorized as a member of the Iridovirinae relatives. The affliction within the warthog, the typical host, in Africa used to be defined in 1921 via R. E. Montgomery. The reservoir of the vi rus is inti cks. The i ntroduct i on of family pi gs into territory occupied by way of warthogs i nf ected wi th ASF within the 1960's has endangered the pig around the globe. The family pig is very delicate to ASF and develops a devastating disorder that kills the pig with no giving the immune process an opportunity to protect the animal opposed to the virus an infection. the power of ASF virus to contaminate and damage cells of the reticuloendothelial approach leaves a defenseless host that succumbs to infection that could be defined as an obtained immune deficiency di sease of family pi gs. advent of the virus into Iberia within the 1960's resulted in a chain of ASF epidemics in Spain and Portugal . . and later in France, that prompted heavy financial losses. among 1976 and 1960, ASF virus made its visual appeal in Malta and Sardinia . . in addition to in Brazil, The Dominican Republic . . Haiti, and later in Cuba. In 1985-6 . . ASF seemed in Belgium and The Netherlands.

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This is not the case in ASF infection because the antibody produced does not neutralize the virus. Development of ASF antibody is frequently followed by an increasing peripheral leucocyte count and decreasing fever; thus, it appears that the effect of ASF virus infection on reticular cells and development of an immune response is related to whether or not the pig survives an ASF infection. How this immune response operates still has to be determined. 29 REFERENCES l. 2. 3. 4. 5. 6. 7. 8. 9. 10.

The virus passaged in VERO cells changes much less than in macroDhages. s in protein p220/p150 and a third clone in protein p27 (Fig. 5). In field virus isolates, we have detected antigenic changes in 6 out of 10 ASF virus proteins for which there are available monoclonal antibodies, suggesting a broad distribution of the variability (Fig. 6). 015 COMPETING VIRUS,lJg Fig. 4. Binding of monoclonal antibodies to ASF virus isolates passaged in porcine macrophages, texted by a competitive radioimmunoassay.

I•••• I II • • II • • I I . II II II II II... • II • • • ••• • • II • ~I ~~I ~~ ~ I I ~I I I 1I I I I III I I I ~~! JJmm t::":ZZtl OCID 100 00000011000000110000110000 I _ _ [J[Q] @o 0 0 0 0 0 0 1 . 0 0 0 0 0 0 . 1 0 0 0 0 11000 01 Fig. 6. Binding of monoclonal antibodies to African, European and American ASF virus field isolates. Symbols as in Fig. 5. Reprinted with permission of (13). I 47 and E. Vifiuela, unpublished data). REFERENCES 1. R. Adv. Vet. Sci. Compo Med. 25: 349-356, 1981. 2. , Black-,-D •.

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