| isolations of yellow fever virus from haemagogus leucocelaenus in rio grande do sul state, brazil. | following howling monkey (alouatta caraya) deaths and yellow fever (yf) antigen detection by immunohistochemistry in the liver sample of a dead monkey in april and may 2001 in the municipalities of garruchos and santo antônio das missões, rio grande do sul state, brazil, epidemiological field investigations were initiated. two strains of yf virus were isolated in suckling mice from 23 haemagogus (conopostegus) leucocelaenus dyar & shannon mosquitoes collected from the study sites. the yf virus w ... | 2003 | 12892055 |
| [finding of haemagogus (conopostegus) leucocelaenus (diptera: culicidae), in the municipality of porto alegre, state of rio grande do sul]. | in november 2006, an entomological investigation was carried out in a native forest in the municipality of porto alegre, state of rio grande do sul. the result was the capture of several culicidae species, including the first recording of the presence of haemagogus leucocelaenus in this locality. this species is considered to be a vector for the yellow fever virus in some municipalities of this state, and this was the motivation for the present communication, in order to warn regarding the poten ... | 2007 | 17876479 |
| yellow fever virus in haemagogus leucocelaenus and aedes serratus mosquitoes, southern brazil, 2008. | yellow fever virus (yfv) was isolated from haemagogus leucocelaenus mosquitoes during an epizootic in 2001 in the rio grande do sul state in southern brazil. in october 2008, a yellow fever outbreak was reported there, with nonhuman primate deaths and human cases. this latter outbreak led to intensification of surveillance measures for early detection of yfv and support for vaccination programs. we report entomologic surveillance in 2 municipalities that recorded nonhuman primate deaths. mosquit ... | 2010 | 21122222 |
| a comparative study of the effect of multiple immersions on aedini (diptera: culicidae) mosquito eggs with emphasis on sylvan vectors of yellow fever virus. | the effect of multiple immersions on haemagogus janthinomys , haemagogus leucocelaenus , aedes albopictus and ochlerotatus terrens eggs was studied. eggs were collected in april, june, october and december of 2011 in minas gerais, brazil. most of the aedes and ochlerotatus eggs hatched upon the first immersion, while haemagogus eggs showed a varied instalment hatching response. the number of immersions required for hatching increased for eggs collected closer to the dry winter season. | 2013 | 24626304 |
| haemagogus leucocelaenus and other mosquitoes potentially associated with sylvatic yellow fever in cantareira state park in the são paulo metropolitan area, brazil. | the aim of this work was to investigate whether haemagogus leucocelaenus and other mosquito species associated with sylvatic transmission of yellow fever virus are present in cantareira state park (csp) in the são paulo metropolitan area (spma). from october 2015 to march 2016, adult mosquitoes were captured with the centers for disease control and prevention traps, manual battery-powered aspirators, and shannon traps; larvae and pupae were collected in natural and artificial breeding sites. a t ... | 2016 | 28206862 |
| diversity of yellow fever mosquito vectors in the atlantic forest of rio de janeiro, brazil. | environmental modifications caused by human activities have led to changes in mosquito vector populations, and sylvatic species have adapted to breeding in urban areas. | 2017 | 27384833 |
| vertical oviposition activity of mosquitoes in the atlantic forest of brazil with emphasis on the sylvan vector, haemagogus leucocelaenus (diptera: culicidae). | this study aimed to assess the vertical patterns of oviposition and temporal changes in the distribution of mosquito species in an area of the atlantic forest in rio de janeiro state, brazil, and in particular, the behavior and oviposition of potential yellow fever virus vectors. mosquito samples were collected from the ecological reserve guapiaçu (regua, brazil), which includes a somewhat disturbed forest, with a large diversity of plants and animals. in all, 5,458 specimens (ten species from s ... | 2016 | 27232120 |
| [yellow fever: reemerging in the state of sao paulo, brazil, 2009]. | to describe the investigation of a sylvatic yellow fever outbreak in the state of sao paulo and the main control measures undertaken. | 2013 | 24626492 |
| flight height preference for oviposition of mosquito (diptera: culicidae) vectors of sylvatic yellow fever virus near the hydroelectric reservoir of simplício, minas gerais, brazil. | in this study, the oviposition behavior of mosquito species exhibiting acrodendrophilic habits was investigated. the study was conducted near the simplicio hydroelectic reservoir (shr) located on the border of the states of minas gerais and rio de janeiro, brazil. samples were collected using oviposition traps installed in forest vegetation cover between 1.70 and 4.30 m above ground level during the months of april, june, august, october, and december of 2011. haemagogus janthinomys (dyar), haem ... | 2013 | 23926776 |
| potential risk of re-emergence of urban transmission of yellow fever virus in brazil facilitated by competent aedes populations. | yellow fever virus (yfv) causing a deadly viral disease is transmitted by the bite of infected mosquitoes. in brazil, yfv is restricted to a forest cycle maintained between non-human primates and forest-canopy mosquitoes, where humans can be tangentially infected. since late 2016, a growing number of human cases have been reported in southeastern brazil at the gates of the most populated areas of south america, the atlantic coast, with rio de janeiro state hosting nearly 16 million people. we sh ... | 2017 | 28687779 |