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West Indian med. j ; 32(3): 147-51, Sept. 1983.
Artigo em Inglês | MedCarib | ID: med-11426


The occurrence of bacteria in oysters (Crassotrea rhizophorae) and seawater from Jamaican commercial oyster-culture sites was determined, using standard microbiological methods. Vibrio vulnificus, V. cholerae (non-01, non-toxigenic), V. parahaemolyticus and V. alginolyticus were identified in seawater samples, and the latter two mildly pathogenic species in oysters. The pathogenicity of halophilic vibrios is reviewed. The results suggest that correct selection of oyster-culture sites may significantly reduce the public health hazards associated with shellfish, and that more and precise information is required on the geographical and seasonal distribution of infection risk (AU)

21003 , Microbiologia de Alimentos , Ostreidae/microbiologia , Água do Mar , Vibrioses/transmissão , Sais/análise , Microbiologia da Água , Jamaica
Bull World Health Organ ; 36(2): 283-301, 1967.
Artigo em Inglês | MedCarib | ID: med-9924


Malaria and its local vector, Anopheles darlingi, were eradicated from the coastlands and near interior of Guyana by DDT house-spraying in 1945-51. In the remote interior, where 10 percent of the population live, only partial control could be achieved, owing to the semi-silvatic habits of A. darlingi and the considerable movement of the sparce population; low malaria endemicity persisted in these areas with occasional localized outbreaks. In the south-west the problem was further complicated by the presence of malaria across the frontier. During the years 1961-65, the use of chloroquinized salt was made compulsory over an area of some 109,000 km(sq), covering a population of 48,500. Satisfactory results were obtained over 84 percent of this area within 6 months of the start of the campaign; only four cases of malaria were seen in four years. In the south-west, however, an initally favourable trend was reversed in 1962 with the introduction of a chloroquine-resistant strain of Plasmodium falciparum from Brazil. The situation was brought under control by house-spraying with DDT and interruption of transmission is expected. (AU)

Humanos , Malária/tratamento farmacológico , Malária/prevenção & controle , Cloroquina/farmacologia , Cloroquina/uso terapêutico , Malária/transmissão , Sais/uso terapêutico
West Indian med. j ; 11(2): 130, June 1962.
Artigo em Inglês | MedCarib | ID: med-7558


In July 1960 there was a sudden outbreak of Pl. vivax malaria in the East and West banks of the Demerara River Estuary. Previously this had been regarded as an area in which malaria was entirely controlled and A. darlingi eradicated. Studies showed that A. aquasalis was the vector of this outbreak. Factors responsible for this are thought to be varied. There has been a general increase of the population of this area and an influx of parasite carriers from the interior where control is not yet achieved. Housing developments and industrial plants have lead to a decline in acreage for pastureland and livestock and it is suggested that A. aquasalis has been partially diverted from livestock to man. If endemic malaria is to be prevented from recurring in areas previously freed of this disease three main steps will be necessary - (1) Complete eradication of malaria in the interior, mainly by the use of chloroquinized salt in these areas as well as in Brazil. (2) Thorough and efficient and continuous malaria surveillance. (3) Rational integration of all planning with respect to urban, village and agricultural development in order to maintain an adequate balance in the distribution of human and livestock population (AU)

Humanos , 21003 , Malária/prevenção & controle , Insetos Vetores , Controle de Mosquitos , Sais , Planejamento Socioeconômico