Factors increasing the risk of DHF outbreaks The occurrence of DHF outbreaks is linked to a number of factors, including the density of mosquito vectors, particularly that of Aedes aegypti. The precise population density of Ae. aegypti that is needed to sustain dengue virus transmission epidemically or endemically has yet to be determined, but experience in Singapore in recent years suggests th...

RESUMO Este ensaio parte da premissa de que a melhor estratégia para controlar os mosquitos vetores das arboviroses, e alcançar efetivos resultados profiláticos no complexo ambiente urbano favelas brasileiras, é promover rotineiras ações manejo ambiental inseridas em uma orientação integrada interdisciplinar. Essa se sustenta na complexa realidade social urbana favelas, histórico insucessos con...

Zika virus is normally transmitted by mosquitos, but cases of sexual transmission have been reported. We describe a patient with symptomatic Zika virus infection in whom the virus was detected in semen for 92 days. Our findings support recommendations for 6 months of barrier contraceptive use after symptomatic Zika virus infection.

This work aimed at assessing the spatial distribution of the dengue fever mosquito vector, Aedes aegypti and its association with Strategic Sites (SS). In each of three localities of Rio de Janeiro city, 80 traps were installed (40 for adult mosquitos and 40 for immatures) in randomly chosen households. Moreover, two further traps we installed close to each SS. These traps were localized with G...

Arboviroses como Dengue, Zika, Chikungunya e Febre amarela têm sido um grande problema de saúde pública em regiões tropicais subtropicais. O alto número casos destas doenças é associado nessas com a expansão geográfica do mosquito vetor que pertencente ao gênero Aedes, especial o A. aegypti. Com falta medicamento principalmente vacinas reconhecidas pela OMS, exceto da amarela, controle populaci...

Collections of adult anopheline mosquitos were made from a cow-baited trap in nine coastal villages located along nearly 160km of northwest peninsular Malaysia. Two collections, separated by 1.5 to 6 months, were made at each site. Nearly 6,000 anophelines of 19 species were collected. The dominant species were Anopheles peditaeniatus. An. sinensis, An. subpictus and An. lesteri paraliae. Small...

On my voyage home from Calcutta last March, Mr. J. F. Parker, of .Messrs. Thacker, Spink & Co., of Calcutta, and Mrs. Parker, who were travelling in the same vessel with me, volunteered the following statement regarding an outbreak of fever. I cannot answer for the facts, because I was not aware of the case at the time it occurred, and because a letter which I addressed to Calcutta on the subje...