| a yellow fever epizootic in zika forest, uganda, during 1972: part 1: virus isolation and sentinel monkeys. | the results of the yellow fever immunity survey of central and east africa reported by sawyer & whitman in 1936 prompted scientists to undertake well-planned epidemiological studies on yellow fever in eastern africa. a yellow fever research institute (the present east african virus research institute) was established at entebbe in 1936 for this purpose. one of the areas where much work has been carried out is a strip of typical tropical forest, the zika forest, 12 kilometres from the institute. ... | 1977 | 407675 |
| investigations into yellow fever virus and other arboviruses in the northern regions of kenya. | previous studies having shown an appreciable level of yellow fever immunity to exist in northern kenya, further epidemiological and serological surveys were carried out there in 1968 in an attempt to define more clearly the distribution of yellow fever and to locate possible vector and reservoir hosts of the disease; these surveys also provided information on a number of other arboviruses.altogether 436 sera from 5 areas in northern kenya were screened by haemagglutination-inhibition tests with ... | 1970 | 4393661 |
| possible contributing factors to the paucity of yellow fever epidemics in the ashanti region of ghana, west africa. | yellow fever virus vectors identified in the ashanti region of ghana included aedes aegypti, aedes africanus, aedes luteocephalus and aedes vittatus. other mosquito species, unrelated to yellow fever transmission, identified in this study included culex tigripes, culex thalassius, culex decens, culex tarsalis, anopheles gambiae, anopheles stephansi and toxorynchites brevipalpis. factors generally known to influence yellow fever transmission were also studied in the ashanti region. these included ... | 1996 | 8625858 |
| [present status of an arbovirus infection: yellow fever, its natural history of hemorrhagic fever, rift valley fever]. | in the early 20th century, when it was discovered that the yellow fever virus was transmitted in its urban cycle by aedes aegypti, measures of control were introduced leading to its disappearance. progressive neglect of the disease, however, led to a new outbreak in 1927 during which the etiological agent was isolated; some years later a vaccine was discovered and yellow fever disappeared again. in the 1960s, rare cases of encephalitis were observed in young children after vaccination and the ad ... | 1999 | 10690474 |
| yellow fever risk assessment in the central african republic. | starting in 2008, the central african republic (car) experienced an unprecedented number of reported yellow fever (yf) cases. a risk assessment of yf virus (yfv) activity was conducted to estimate potential disease risk and vaccine needs. | 2014 | 24947520 |
| [the epidemiology of yellow fever in western africa]. | observations made during the epidemics in côte d'ivoire (1982), burkina faso (1983), nigeria (1986 and 1987) and mali (1987), together with studies conducted in the last 10 years, particularly in côte d'ivoire, now make it possible, without calling into question the dynamics of yellow fever virus circulation in space and time, to redefine some features of the pattern suggested in 1977 and refined on a number of occasions up to 1983. the endemicity area is still the region of epizootic and enzoot ... | 1991 | 2054923 |
| [a strain of amaril virus isolated from aedes africanus in the ivory coast]. | the yellow fever virus has been isolated from a pool of aedes africanus caught on men in a region situated between forest and savannah near touba, in the ivory coast. this isolation, occurring at an interepidemic period, proves for the first time in west africa, the part played by this mosquito in the transmission of the yellow fever virus. | 1975 | 171098 |
| using a climate-dependent model to predict mosquito abundance: application to aedes (stegomyia) africanus and aedes (diceromyia) furcifer (diptera: culicidae). | mosquitoes, acting as vectors, are involved in the transmission of viruses. thus, their abundances, which strongly depend on the weather and environment, are closely linked to major disease outbreaks. the aim of this paper is to provide a tool to predict vector abundance. in order to describe the dynamics of mosquito populations, we developed a matrix model integrating climate fluctuations. the population is structured in five stages: two egg stages (immature and mature), one larval stage and tw ... | 2008 | 17698422 |