Sylvatic yellow fever activity in Trinidad, 1988–1989

Rawlins, Samuel C.; Hull, Barbara P.; Chadee, Dave D.; Martinez, Raymond; LeMaitre, Ashton; James, F. Striebel; Webb, Lloyd

doi:10.1016/0035-9203(90)90411-7

Cited by 19 publications

(10 citation statements)

References 9 publications

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“…YF virus in the laboratory (Waddell, 1949) and YF virus has been isolated from field-collected specimens in Brazil (Shannon etal., 1938;Causey & Dos Santos, 1949;Pinheiro et al, 1981) and Trinidad . Similar vector status has been demonstrated for Hg.janthinomys (de Ronadiche et al, 1947;Rawlins et al, 1990;Chadee et al, 1992) in Latin America and the Caribbean region. Results of the present study suggest that Hg.…”

Section: Haemagogus Leucocelaenus Has Been Shown T O Transmitsupporting

confidence: 79%

Seasonal abundance, biting cycle and parity of the mosquito Haemagogus leucocelaenus in Trinidad, West Indies

Chadee

Ganesh

Hingwan³

et al. 1995

Medical Vet Entomology

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Adult female populations of Haemagogus leucocelaenus (Dyar and Shannon), the sylvan vector of yellow fever, were monitored weekly during 1981-82 by human collectors on the ground at Point Gourde in Chaguaramas Forest, 16 km west of Port of Spain, Trinidad. Hg.leucocelaenus showed only diurnal landing activity, from 06.00 to 18.00 hours (sunrise to sunset, universal time), with a single peak of activity between 10.00 and 14.00 hours. Densities of Hg.leucocelaenus during the wet season (May-November) were about double the level recorded during the dry season (December-April). Monthly parous rates averaged 53.9% (range 25-90%) and some females were up to five-pars. Retained eggs (range 2-6, mean 4/female) were found in the ovaries of 0.34% of landing females, all of which had stage 1 ovarian follicles for the next gonotrophic cycle. Therefore blood-feeding is not inhibited by egg retention. Hg.leucocelaenus vector potential is reappraised in the light of these findings.

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Section: Haemagogus Leucocelaenus Has Been Shown T O Transmitsupporting

confidence: 79%

Seasonal abundance, biting cycle and parity of the mosquito Haemagogus leucocelaenus in Trinidad, West Indies

Chadee

Ganesh

Hingwan³

et al. 1995

Medical Vet Entomology

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“…The species Hg. janthinomys is considered to be the main yellow fever virus vector in South America (Hoch et al ., 1981; Rawlins et al ., 1990; Dégallier et al ., 1991; Vasconcelos et al ., 1997, 2001a, c), appears to be capable of vertical transmission of the yellow fever virus (Chadee et al ., 1992; Vasconcelos et al ., 2001b; Mondet et al ., 2002) and may be involved in the transmission of the Mayaro virus (Hoch et al ., 1981). This species is found in primary tropical forest and is widely distributed in Central and South America.…”

Section: Discussionmentioning

confidence: 99%

Mosquitoes of the Jaú National Park and their potential importance in Brazilian Amazonia

Hutchings

Sallum

Ferreira

2005

Medical Vet Entomology

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Abstract. An entomological inventory was conducted between 1993 and 1996 to obtain information on the diversity of mosquitoes (Diptera: Culicidae) in the Jaú National Park, State of Amazonas, Brazil. A total of 10,159 adult (91%) and immature mosquito specimens, representing 130 taxa (species + morphospecies) in 16 genera, was collected. A species list for the family Culicidae is presented, including 30 new records for the State of Amazonas. The collecting localities were restricted to the alluvial subregion of the Open Tropical Forest found in the park. Most of the specimens (71%) were collected in forest habitats and the rest in areas of second growth and peridomicile. The majority of immature specimens (46%) were collected in bodies of water along the edges of rivers, flooded forests, lakes and streams. Among the various collection methods used, the Centre for Disease Control (CDC) and Shannon traps together were responsible for capturing 60% of the adults. More than 90% of the material collected belongs to the genera Culex (65%), Psorophora (19%), Wyeomyia (4%), and Anopheles (3%), which together represent 70% of the identified taxa. The genus Culex presented the largest number of species (45). The species Culex (Melanoconion) vaxus, Cx. (Mel.) pedroi, Psorophora amazonica, Cx. (Mel.) portesi and Cx. (Mel.) theobaldi together (< 4% of the recorded species) represent more than 63% of the material collected and identified to the species level. The most abundant species was Cx. (Mel.) vaxus, representing 17% of the material identified to species. The possible epidemiological and ecological implications of the species hereby recorded in the Jaú National Park are presented and discussed.

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“…), owl monkeys ( Aotus sp. ), squirrel monkeys ( Saïmiri genus) and howler monkeys from the genus Alouatta [ 53 , 54 , 55 , 56 , 57 , 58 , 102 ]. Importantly, in these species, lethality was reported, reaching degrees of severity that were never observed in monkeys from the African continent [ 103 , 104 ].…”

Section: Ecology Of Yellow Fever Virusmentioning

confidence: 99%

“…aegypti . In South America, YFV has been identified in NHPs from the genera Alouatta (main host), Saimiri , Ateles , Aotus , Cebus , Callicebus , Callithrix , and Saguinus [ 53 , 54 , 55 , 56 , 57 ]. The sylvatic vectors include species from the genera Haemagogus and Sabethes notably Haemagogus ( Haemagogus ) janthinomys Dyar, Haemogogus ( Conopostegus ) leucocelanus (Dyar and Shannon), Haemagogus ( Haemagogus ) Spegazzinii Brethes, Sabethes ( Sabethoides ) Chloropterus (Von Humboldt), Sabethes ( Sabethes ) Albipivus Theobald and Sabethes ( Sabethes ) Cyaneus (Fabricius).…”

Section: Figurementioning

confidence: 99%

What Does the Future Hold for Yellow Fever Virus? (I)

Klitting

Gould

Paupy

et al. 2018

Genes

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The recent resurgence of yellow fever virus (YFV) activity in the tropical regions of Africa and South America has sparked renewed interest in this infamous arboviral disease. Yellow fever virus had been a human plague for centuries prior to the identification of its urban transmission vector, the Aedes (Stegomyia) aegypti (Linnaeus) mosquito species, and the development of an efficient live-attenuated vaccine, the YF-17D strain. The combination of vector-control measures and vaccination campaigns drastically reduced YFV incidence in humans on many occasions, but the virus never ceased to circulate in the forest, through its sylvatic invertebrate vector(s) and vertebrate host(s). Outbreaks recently reported in Central Africa (2015–2016) and Brazil (since late 2016), reached considerable proportions in terms of spatial distribution and total numbers of cases, with multiple exports, including to China. In turn, questions about the likeliness of occurrence of large urban YFV outbreaks in the Americas or of a successful import of YFV to Asia are currently resurfacing. This two-part review describes the current state of knowledge and gaps regarding the molecular biology and transmission dynamics of YFV, along with an overview of the tools that can be used to manage the disease at individual, local and global levels.

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Sylvatic yellow fever activity in Trinidad, 1988–1989

Cited by 19 publications

References 9 publications

Seasonal abundance, biting cycle and parity of the mosquito Haemagogus leucocelaenus in Trinidad, West Indies

Seasonal abundance, biting cycle and parity of the mosquito Haemagogus leucocelaenus in Trinidad, West Indies

Mosquitoes of the Jaú National Park and their potential importance in Brazilian Amazonia

What Does the Future Hold for Yellow Fever Virus? (I)

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