Browsing by Author "Scott, G. R."
Now showing 1 - 8 of 8
- Results Per Page
- Sort Options
Item Morbidity and Mortality Rates in East Coast Fever (Theileria Parva Infection) and Their Application to Drug Screening Procedures(1961) Brocklesby, D.W.; Barnet, t S.F.; Scott, G. R.The enzootic status of East Coast fever in much of eastern, central and southern Africa makes this infection one of the most important cattle diseases, economically, to the stock owner. The losses are both indirect and direct. The former arise from expensive and repetitive tick control measures and the latter from the high mortality rates in infected cattle. Textbooks cite morbidity rates of 100 per cent and mortality rates exceeding 95 per cent are reported from South America, whereas in East America recoveries are frequent in Zebu cattle in enzootic areas. Protocols, however, have not hitherto been published.Item Mortality of Fowl Embryos Inoculated with Avianized Strains of Rinderpest Virus(1962) Piercyt, S. E.; Witcomb, M. A.; Scott, G. R.The mean mortality of fowl embryos inoculated into the yolk sac with the avianized bovine strain of rinderpest virus was 89•9 ± 4• 1 per cent. With the avianized lapinized strain it was 5 I• 1 ± 14• 1 per cent. The curves relating numbers of deaths to days after inoculation were similar with the 2 strains. A significant factor influencing the mortality was the age of the fowl embryo at the time of inoculation.Item A Neutralization Test for the Detection of Rinderpest Antibodies(1958) Scott, G. R.; Brown, R.DDuring the past four years we have studied, independently at Kabete and Muguga, rinderpest immunity and found that the most useful technique was the detection of neutralizing antibodies. We developed standard procedures which differed only in minor detail and which were based on the system by which Nakamura (1940) followed the development of antibodies in rabbits given lapinised rinderpest virus. The techniques and applications are herein recorded.Item Notes on Animal Diseases(1939) Scott, G. R.Twelve virus diseases are known to affect domestic pigs and five of them are present in Kenya. The latter are discussed fully in this paper. Brief notes on the other infections are included because of the increased facility for the introduction of exotic diseases occasioned by modern forms of transport. In addition, atrophic rhinitis is discussed although the retiology of the disease is still unknown.Item The Production of Caprinised Rinderpest Vaccine(Comm. for Technical Cooperation in Africa South of the Sahara, Publ. Bureau, 1957) Macleod, W.G.; Scott, G. R.; Evans, S.A.; East African Veterinary Research OrganisationThe Kabete attenuated goat (K.A.G.) strain of caprinised rinderpest virus has proved to be the most successful agent in the control• of rinderpest in Africa. Daubney (1949) estimated that at least fifteen million cattle had been immunized with K.A.G. by 1948 and since then a further forty million cattle have been vaccinated. Despite the widespread use of K.A.G., details of this production technique have hitherto not been published. Our current methods are an elaboration of Daubney and Hudson's original technique for the production of dried infected goat spleens at the Veterinary Laboratory, Kabete, and owe much to Brotherston's, Burdin's, and Scott's later innovations.Item Rinderpest in Eastern Africa today(1960) Libeau, J.; Scott, G. R.A Regional Meeting of Veterinary Administrators in Eastern Mrica was held in Nairobi on 29 and 30 September 1959, under the auspices of CCTA. The eradication of rinderpest from Eastern Mrica was discussed. The data presented here was derived from documents presented at the Meeting, from information given by the delegates, and from the annual reports of the various territorial veterinary services. Rinderpest has been eradicated from Eastern Africa except for Karamoja in the north-east corner of Uganda, the Northern Frontier Province of Kenya, the north-west part of Somalia, the Southern Sudan and Ethiopia. In addition the disease appears to be enzootic in wild game in Kenya Masailand and the contiguous part of Tanganyika Masailand.Item Rinderpest in Pigs of European Origin(1961) Scott, G. R.Pigs of European origin proved susceptible to both virulent and attenuated strains of rinderpest virus when virus was administered parenterally or by ingestion. Overt signs of rinderpest other than mild transient fever were absent and many infections were clinically unapparent. A significant number of pigs and cattle housed with pigs infected with bovine strains of rinderpest contracted the disease, but contact transmission between healthy pigs and cattle and pigs infected with the laboratory-attenuated strains failed.Item Yield Base for Caprinized Rinderpest Vaccine(1961) Scott, G. R.; Rampton, C.S.; East Africa Veterinary Research Organization, MugugaThe mean yield from ten consecutive batches of caprinized rinderpest virus was I03 0 7S±Qo04 IDso per gram of goat spleen processed. The mean annual yield was estimated to be 52023 ± 12·39 field doses per gram of goat spleen processed.
