Monitoring of malaria vectors at the China-Myanmar border while approaching malaria elimination.

Background: Tengchong County was one of the counties located at the China-Myanmar border with high malaria incidence in the previous decades. As the pilot county for malaria elimination at the border area, Tengchong County is aiming to be the first county to achieve malaria elimination goal. A cross-sectional entomological survey was carried out to evaluate the feasibility of elimination approach and assess the receptivity of malaria reintroduction.

[Screening Radius of Active Case Detection and the Malaria Parasite Rate of Carriers in China-Myanmar Border].

Objective: To explore the effective screening radii of active case detection of the 1-3-7 surveillance and response strategy, and investigate the malaria parasite rate of carriers in China-Myanmar border.

Methods: Three villages with indigenous malaria cases in Yingjiang County of Yunan Province were selected as study sites. The persons lived around the indigenous cases (index case) within the radius of 100 m, 300 m, 500 m, and 1 km were screened by microscopy and nested PCR.

[Ecological behavior comparison between Anopheles pseudowillmori and A. willmori in villages with malaria outbreaks in Motuo County, Tibet Autonomous Region].

Objective: To understand the ecological behaviors of Anopheles pseudowillmori and A. willmori in medium or high altitude areas of Motuo County, Tibet Autonomous Region, and their transmission potential for malaria.

Methods: The methods of human net traps, cow baited trap, house baited trap, pig baited trap and CDC light traps were adopted for investigating the mosquito density, biting activity at night and in or out door preference of biting.

Malaria transmission potential in the Three Gorges Reservoir of the Yangtze River, China.

Objective: To define and evaluate the malaria transmission potential in the Yangtze River, following construction of the Three Gorges Reservoir.

Methods: Six villages, namely, Kaixian, Fengjie, Wanzhou, Fuling, Yubei, and Zigui were selected for investigating the malaria transmission potential in the reservoir. Transmission potential was estimated by mathematical modeling and evaluation of the local malaria situation.

[Stabilities of two kinds of Plasmodium antigen substrate slides under different storage temperatures and time].

Objective: To observe and compare the inspection effects of antigen substrate slides of Plasmodium cynomolgi (P. c) and Plasmodium falciparum (P. f) on the malaria antibody titer under different storage temperatures and time.

Comparative evaluation of light-trap catches, electric motor mosquito catches and human biting catches of Anopheles in the Three Gorges Reservoir.

The mosquito sampling efficiency of light-trap catches and electric motor mosquito catches were compared with that of human biting catches in the Three Gorges Reservoir. There was consistency in the sampling efficiency between light-trap catches and human biting catches for Anopheles sinensis (r = 0.82, P<0.

[Investigation on Anopheles species and their composition in villages at different altitudes of Motuo County, Tibet Autonomous Region].

Objective: To study the anopheline species and composition in villages at different altitudes, Muotuo County.

Methods: Six villages with different altitudes were selected as the investigation spots, i.e.

[Morphology and habits of An. anthropophagus and its role in malaria transmission in Hengqin Island of Zhuhai City].

Objective: To study the morphology and ecological habits of An. anthropophagus and its role in malaria transmission in Hengqin Island of Zhuhai City, Guangdong Province.

Methods: Mosquitoes were captured through overnight/semi-overnight trapping with human and cattle baits as well as lamp-trapping.

[Factors affecting malaria outbreak in Congjiang county of Guizhou Province].

Objective: To make a field investigation on the affecting factors of malaria outbreak in a village of Congjiang County, Guizhou Province.

Methods: The investigation was made in August, 2006. Filter paper dry blood samples were taken for indirect fluorescent antibody test (IFAT) from all the 495 residents above 1 year-old in the village where an outbreak of malaria was reported.