THE EFFECT OF DEFORESTATION ON THE HUMAN-BITING RATE OF ANOPHELES DARLINGI, THE PRIMARY VECTOR OF FALCIPARUM MALARIA IN THE PERUVIAN AMAZON

2006 ◽  
Vol 74 (1) ◽  
pp. 3-11 ◽  
Author(s):  
AMY YOMIKO VITTOR ◽  
ROBERT H. GILMAN ◽  
JAMES TIELSCH ◽  
GREGORY GLASS ◽  
TIM SHIELDS ◽  
...  
Keyword(s):  
Falciparum Malaria ◽  
Anopheles Darlingi ◽  
Peruvian Amazon ◽  
Biting Rate ◽  
Primary Vector ◽  
Human Biting Rate

scholarly journals Establishment of a free-mating, long-standing and highly productive laboratory colony of Anopheles darlingi from the Peruvian Amazon

2015 ◽  
Vol 14 (1) ◽  
Author(s):  
Cuauhtémoc Villarreal-Treviño ◽  
Gissella M Vásquez ◽  
Victor M López-Sifuentes ◽  
Karin Escobedo-Vargas ◽  
Anibal Huayanay-Repetto ◽  
...  
Keyword(s):  
Anopheles Darlingi ◽  
Peruvian Amazon ◽  
Laboratory Colony

scholarly journals Simulation of the probable vector density that caused the Nagasaki dengue outbreak vectored by Aedes albopictus in 1942

2013 ◽  
Vol 141 (12) ◽  
pp. 2612-2622 ◽  
Author(s):  
M. OKI ◽  
T. YAMAMOTO
Keyword(s):  
Aedes Albopictus ◽  
Second World War ◽  
Disease Spread ◽  
World War ◽  
Vector Density ◽  
Dengue Outbreak ◽  
Biting Rate ◽  
Dengue Outbreaks ◽  
Second World ◽  
Human Biting Rate

SUMMARYJapan experienced dengue outbreaks vectored by Aedes albopictus during the Second World War. The probable vector density that caused the largest dengue outbreak in Nagasaki in 1942 was estimated using a mathematical simulation model. The estimated vector density was 15·0–558·0 per person when various assumptions of uncertain parameters were applied, such as proportion of symptomatic cases, vector mortality, and human biting rate of A. albopictus. When the most favourable disease spread conditions, such as a combination of the exclusive human biting rate and the longest vector survival were assumed, the vector density was 15–25 mosquitoes per person. Unusually high vector density due to wartime practices, and the traditional Japanese lifestyle were presumably responsible for the earlier dengue outbreak. If an outbreak occurs in present-day Japan, it is unlikely to spread as much as the previous one, as environmental conditions and human behaviour have changed in a protective manner.

scholarly journals Entomological determinants of malaria transmission in Kayin state, Eastern Myanmar: A 24-month longitudinal study in four villages

2019 ◽  
Vol 3 ◽  
pp. 109
Author(s):  
Victor Chaumeau ◽  
Bénédicte Fustec ◽  
Saw Nay Hsel ◽  
Céline Montazeau ◽  
Saw Naw Nyo ◽  
...  
Keyword(s):  
Malaria Transmission ◽  
Infection Rate ◽  
Malaria Vectors ◽  
Bed Nets ◽  
Biting Rate ◽  
Multiple Species ◽  
Few Data ◽  
Greater Mekong Subregion ◽  
Very High ◽  
Human Biting Rate

Background: The Thailand-Myanmar borderland is an area endemic for malaria where transmission is low, seasonal and unstable. The epidemiology has been described but there is relatively few data on the entomological determinants of malaria transmission. Methods: Entomological investigations were conducted during 24 months in four villages located in Kayin state, on the Myanmar side of the Thailand-Myanmar border. Anopheles mosquitoes were identified by morphology, and molecular assays were used in order to discriminate between closely related sibling species of malaria vectors. Plasmodium infection rate was determined using quantitative real-time PCR. Results: The diversity of Anopheles mosquitoes was very high and multiple species were identified as malaria vectors. The intensity of human-vector contact (mean human-biting rate= 369 bites/person/month) compensates for the low infection rate in naturally infected populations of malaria vectors (mean sporozoite index= 0.04 and 0.17 % for P. falciparum and P. vivax respectively), yielding intermediary level of transmission intensity (mean entomological inoculation rate= 0.13 and 0.64 infective bites/person/month for P. falciparum and P. vivax, respectively). Only 36% of the infected mosquitoes were collected indoors between 09:00 pm and 05:00 am, suggesting that mosquito bed-nets would fail to prevent most of the infective bites in the study area. Conclusion: This study provided a unique opportunity to describe the entomology of malaria in low transmission settings of Southeast Asia. Our data are important in the context of malaria elimination in the Greater Mekong Subregion.

scholarly journals Entomological determinants of malaria transmission in Kayin state, Eastern Myanmar: A 24-month longitudinal study in four villages

2018 ◽  
Vol 3 ◽  
pp. 109 ◽  
Author(s):  
Victor Chaumeau ◽  
Bénédicte Fustec ◽  
Saw Nay Hsel ◽  
Céline Montazeau ◽  
Saw Naw Nyo ◽  
...  
Keyword(s):  
Malaria Transmission ◽  
Infection Rate ◽  
Malaria Elimination ◽  
Malaria Vectors ◽  
Bed Nets ◽  
Biting Rate ◽  
Multiple Species ◽  
Few Data ◽  
Greater Mekong Subregion ◽  
Human Biting Rate

Background: The Thailand-Myanmar borderland is an area endemic for malaria where transmission is low, seasonal and unstable. The epidemiology has been described but there is relatively few data on the entomological determinants of malaria transmission. Methods: As part of a pilot study on Targeted Malaria Elimination, entomological investigations were conducted during 24 months in four villages located in Kayin state, Myanmar. Anopheles mosquitoes were identified by morphology, and molecular assays were used in order to discriminate between closely related sibling species of malaria vectors. Plasmodium infection rate was determined using quantitative real-time PCR. Results: The biodiversity of Anopheles entomo-fauna was very high and multiple species were identified as malaria vectors. The intensity of human-vector contact (mean human-biting rate= 369 bites/person/month) compensates for the low infection rate in naturally infected populations of malaria vectors (mean sporozoite index= 0.4 and 1.7 /1,000 mosquitoes for P. falciparum and P. vivax respectively), yielding intermediary level of transmission intensity (mean entomological inoculation rate= 0.13 and 0.64 infective bites/person/month for P. falciparum and P. vivax, respectively). We estimated that 65% of the potential infective bites are not prevented by mosquito bed nets because of outdoor and early biters. Conclusion: This study provided a unique opportunity to describe the entomology of malaria in low transmission settings of Southeast Asia. Our data are important in the context of malaria elimination in the Greater Mekong Subregion.

scholarly journals The esperanza window trap reduces the human biting rate of Simulium ochraceum s.l. in formerly onchocerciasis endemic foci in Southern Mexico

2017 ◽  
Vol 11 (7) ◽  
pp. e0005686 ◽  
Author(s):  
Mario A. Rodríguez-Pérez ◽  
Javier A. Garza-Hernández ◽  
Mario C. Salinas-Carmona ◽  
Ildefonso Fernández-Salas ◽  
Filiberto Reyes-Villanueva ◽  
...  
Keyword(s):  
Southern Mexico ◽  
Window Trap ◽  
Biting Rate ◽  
Human Biting Rate

314 EXPERIMENTAL INFECTION OF ANOPHELES DARLINGI MOSQUITOES BY PLASMODIUM VIVAX FROM NATURALLY INFECTED PATIENTS IN THE PERUVIAN AMAZON.

2006 ◽  
Vol 54 (1) ◽  
pp. S134.1-S134
Author(s):  
A. R. Bharti ◽  
R. Chuquiyauri ◽  
E. Segura ◽  
V. Lopez ◽  
J. Stancil ◽  
...  
Keyword(s):  
Plasmodium Vivax ◽  
Experimental Infection ◽  
Anopheles Darlingi ◽  
Peruvian Amazon

scholarly journals Entomological determinants of malaria transmission in Kayin state, Eastern Myanmar: A 24-month longitudinal study in four villages

2019 ◽  
Vol 3 ◽  
pp. 109
Author(s):  
Victor Chaumeau ◽  
Bénédicte Fustec ◽  
Saw Nay Hsel ◽  
Céline Montazeau ◽  
Saw Naw Nyo ◽  
...  
Keyword(s):  
Malaria Transmission ◽  
Infection Rate ◽  
Malaria Vectors ◽  
Bed Nets ◽  
Biting Rate ◽  
Multiple Species ◽  
Few Data ◽  
Greater Mekong Subregion ◽  
Very High ◽  
Human Biting Rate

Background: The Thailand-Myanmar borderland is an area endemic for malaria where transmission is low, seasonal and unstable. The epidemiology has been described but there is relatively few data on the entomological determinants of malaria transmission. Methods: Entomological investigations were conducted during 24 months in four villages located in Kayin state, on the Myanmar side of the Thailand-Myanmar border. Anopheles mosquitoes were identified by morphology, and molecular assays were used in order to discriminate between closely related sibling species of malaria vectors. Plasmodium infection rate was determined using quantitative real-time PCR. Results: The diversity of Anopheles mosquitoes was very high and multiple species were identified as malaria vectors. The intensity of human-vector contact (mean human-biting rate= 369 bites/person/month) compensates for the low infection rate in naturally infected populations of malaria vectors (mean sporozoite index= 0.04 and 0.17 % for P. falciparum and P. vivax respectively), yielding intermediary level of transmission intensity (mean entomological inoculation rate= 0.13 and 0.64 infective bites/person/month for P. falciparum and P. vivax, respectively). Only 36% of the infected mosquitoes were collected indoors between 09:00 pm and 05:00 am, suggesting that mosquito bed-nets would fail to prevent most of the infective bites in the study area. Conclusion: This study provided a unique opportunity to describe the entomology of malaria in low transmission settings of Southeast Asia. Our data are important in the context of malaria elimination in the Greater Mekong Subregion.

scholarly journals LIMITED DIVERSITY OF ANOPHELES DARLINGI IN THE PERUVIAN AMAZON REGION OF IQUITOS

2006 ◽  
Vol 75 (2) ◽  
pp. 238-245 ◽  
Author(s):  
VIVIANA PINEDO-CANCINO ◽  
WILLIAM E. OSWALD ◽  
JONATHAN A. PATZ ◽  
EDUARDO TARAZONA-SANTOS ◽  
AMY YOMIKO VITTOR ◽  
...  
Keyword(s):  
Amazon Region ◽  
Anopheles Darlingi ◽  
Peruvian Amazon
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