Larva

A community based campaign for larvae reduction was organized in 3 communes Hoa Loc, An Thoi, Tan Trung of Mo Cay district, Ben Tre province in 2002. The results: the model of campaign expressed clearly the effectiveness and feasibility in larvae and mosquitos density’ reduction immediately after implementing. Furthermore, launching three to four campaigns times per year can maintain its effectiveness in long time. To gain the most effectiveness, all methods were urged implementing for changes in people’s behaviours and close combination between government, health training communication and regulations
Larva ; Epidemiology

OBJECTIVETo detect the species of larval trematodes (cercariae) in Melanopsis praemorsa snails from 5 different fresh water bodies in Palestine.

METHODSA total of 1 880 Melanopsis praemorsa snails were collected from different fresh water bodies in Palestine from October, 2008 to November, 2010. Cercariae in Melanopsis praemorsa snails were obtained by lighting and crushing methods. The behavior of cercariae was observed using a dissecting microscope.

RESULTSThree different species of larval trematodes were identified from Melanopsis praemorsa snails collected only from Al-Bathan fresh water body, while snails from other water bodies were not infected. These species were microcercous cercaria, xiphidiocercaria and brevifurcate lophocercous cercaria. These cercariae called Cercaria melanopsi palestinia I, Cercaria melanopsi palestinia II and Cercaria melanopsi palestinia III have not been described before from this snail in Palestine. The infection rate of Melanopsis praemorsa collected from Al-Bathan fresh water body was 5.7%, while the overall infection rate of snails collected from all fresh water bodies was 4.3%. Details are presented on the morphology and behavior of the cercariae as well as their development within the snail.

CONCLUSIONSThese results have been recorded for the first time and these cercariae may be of medical and veterinary importance.

Cutaneous larva migrans(CLM) is a creeping cutaneous eruption that results from skin invasion by the larval form of nematodes. We experienced two patients who had typical clinical findings of CLM. One patient had a history of contact with possibly contaminated fertilizer by the larva of nematotes. The other had a history of travelling to the endemic tropical areas. We report herein two cases of CLM with the literature review of the previous CLM cases in Korea.
Humans ; Korea ; Larva ; Larva Migrans* ; Skin

Cutaneous larva migrans (CLM) is an uncommon cutaneous creeping eruption caused by the invasion and migration of nematode larvae into the skin. Burrowing larvae produce intensely pruritic, serpiginous, raised erythematous skin lesions. Most cases of CLM reported in Korea involved travelers returning from endemic areas with tropical or subtropical climates. We report herein a case of CLM with no history of travelling to endemic area and briefly review the relevant literature.
Climate ; Korea ; Larva ; Larva Migrans ; Skin

No abstract available.
Larva ; Tick Bites*

Mosquitoes and larvae were investigated in the forests, edges of forest and other landscapes in the jungles of U Minh Thuong and U Minh Ha during two years of 2002 and 2003. A total of 15 species (24.19% of total mosquitoes species found throughout the country and 37.5% of those in the Southern Vietnam) was found, some of which were typical species of the water forest fauma. A mingle species composition of flood plain forest fauna with presence of An. paraliae, An. umbrosus, An. separatus... and coastal brackish fauma with An. sundaucus and An. nimpe found in the study sites suggests that the forests narrowness, forest fires and other ecological damages have caused the changes of species composition and distribution of mosquitoes of forest fauna
Anopheles ; epidemiology ; Larva ; Trees

An.Sundaucus collected from Can Gio, Ho Chi Minh City are colonized at the insectary of the National Institute of Malariology, Parasitology and Entomology and found to quickly adapt to the laboratory conditions. Since the F3, larvae have been living in the artificial brackish water with NaCl 1%. In this condition, 88% of larvae developed to pupae and 83.5% to adults. Light time 10 hours per day with 250 - 270 lux was determined to be conducive for development of larvae
Anopheles ; malaria ; Larva ; Adult

By this study, 5 species of Mesocyclop were identified. All have high ability to kill the larvae of Aedes mosquito. In 24h an average of 28,7-41,3 larvae could be killed, especially 36 larvae by M. woutersi and M. aspericorni, which occurred mainly in water reservoir. The involvement of the community in the eradication of malaria vectors in local area using Mesocyclops was recommended.
Water ; Dengue ; Larva ; Copepoda

A new pilot model - community based campaign for source reduction was implemented in Hoa Loc commune (Mo Cay district, Ben Tre province). Fives campaigns were carried out during rainy season in the year 2002 with strong participation of local authorities, school and other social unions. Fives steps of campaign model included (1) Organizing; (2) Training; (3) Communicating before campaign; (4) Launching campaign; (5) Monitoring and assessing. Results: The entomological index in the implemented communes was lower than communes having participants. A model - community based campaign for source reduction was effective and feasible, at the same time having long effectiveness after 3-4 folds/year
Larva ; Health Promotion ; epidemiology