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Aquisições recentes sobre doença do sono
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Resumo(s)
A tripanosomíase humana africana continua a grassar nos territórios
africanos das regiões tropicais e equatoriais, embora os índices
representativos da intensidade da endemia tenham sofrido nos últimos
anos reduções espectaculares em determinados territórios. Poucas
doenças tropicais como a doença do sono podem ser directamente
incriminadas como um dos grandes factores de despopulação humana,
não só pela mortalidade dramática de que tem sido responsável como
ainda por perturbar as funções genitais causando simultâneamente
esterilidade e frequência de abortos, nadas mortos e partos prematuros.
A análise das grandes endemias africanas tem mostrado que a
doença do sono, mercê da variabilidade dos múltiplos factores que
condicionam as suas probabilidades de ocorrência e a sua transmissão,
sofre flu xos e refluxos condicionados por variações da virulência dos
tripanosomas e outras causas, assistindo-se de vez em quando ao despertar
de focos considerados residuais logo que as medidas tendentes
a controlar a doença, estabilizando-se nos resultados obtidos,
começam a relaxar-se.
Human African trypanosomiasis continues to rage in the tropical and equatorial regions of Africa, although the rates representing the intensity of the endemic disease have fallen dramatically in certain areas in recent years. Few tropical diseases such as sleeping sickness can be directly blamed as one of the major factors in human depopulation, not only because of the dramatic mortality it has caused, but also because of the devastating impact it has had on the economy of the affected countries. Few tropical diseases such as sleeping sickness can be directly blamed as one of the major factors in human depopulation, not only because of the dramatic mortality it has been responsible for, but also because it disrupts genital functions, causing both sterility and frequent miscarriages, stillbirths and premature births. Analysis of major African endemic diseases has shown that sleeping sickness, due to the variability of the multiple factors that condition its probability of occurrence and transmission, undergoes ebbs and flows conditioned by variations in the virulence of trypanosomes and other causes, with occasional outbreaks of foci considered residual as soon as measures aimed at controlling the disease, stabilising the results obtained, begin to relax.
Human African trypanosomiasis continues to rage in the tropical and equatorial regions of Africa, although the rates representing the intensity of the endemic disease have fallen dramatically in certain areas in recent years. Few tropical diseases such as sleeping sickness can be directly blamed as one of the major factors in human depopulation, not only because of the dramatic mortality it has caused, but also because of the devastating impact it has had on the economy of the affected countries. Few tropical diseases such as sleeping sickness can be directly blamed as one of the major factors in human depopulation, not only because of the dramatic mortality it has been responsible for, but also because it disrupts genital functions, causing both sterility and frequent miscarriages, stillbirths and premature births. Analysis of major African endemic diseases has shown that sleeping sickness, due to the variability of the multiple factors that condition its probability of occurrence and transmission, undergoes ebbs and flows conditioned by variations in the virulence of trypanosomes and other causes, with occasional outbreaks of foci considered residual as soon as measures aimed at controlling the disease, stabilising the results obtained, begin to relax.
Descrição
Palavras-chave
Doenças tropicais Doença do sono Tripanosomíase humana africana
Contexto Educativo
Citação
Editora
Instituto de Medicina Tropical