| filariasis in the labour population of a tea estate in upper assam. | preliminary random and mass blood surveys undertaken between 2000-0100 h in a tea garden of upper assam revealed more than 8 per cent positivity for microfilaria (mf) of wuchereria bancrofti. the mf carriers were considerably high among males (73) as compared to females (48). culex quinquefasciatus was incriminated as a vector with man hour density of 68.5 in human dwellings (indoors). the detection of mf in children who had never moved from the area and filaria larvae in vector mosquitoes colle ... | 1995 | 7672834 |
| evaluation of methoprene (altosid) and diflubenzuron (dimilin) for control of mosquito breeding in tezpur (assam). | insect growth regulators (igrs) namely, isopropyl (e-e)-(rs)-11-methoxy-3,7,11-trimethyldodeca-2, 4-dinoate (methoprene) and 1-(4-cyclophenyl)-3-(2,6-diflerobenzoyl) urea (diflubenzuron) were evaluated against mosquito larvae in laboratory as well as in different breeding habitats in tezpur, assam. lc90 values of diflubenzuron against culex quinquefasciatus and aedes albopictus were 0.0022 and 0.0027 ppm respectively, while it was 0.0027 and 0.0022 ppm respectively in case of methoprene. however ... | 1996 | 8952169 |
| biting behaviour and biting rhythm of potential japanese encephalitis vectors in assam. | studies on biting behaviour and biting cycles of medically important mosquitoes were carried out in madhupur village and tarajan tea estate of upper assam. collections were made off human baits outdoors and indoors and off cattle bait outdoors from august 1991 to july 1992. human bait collections were performed using the 'stationary direct bait' technique. a total of 9,072 adult host seeking female mosquitoes representing 26 species and 5 genera were collected off baits of which 36.9% were colle ... | 1997 | 9282509 |
| bancroftian filariasis in namrup tea estate, district dibrugarh, assam. | filariasis survey in a randomly selected tea estate of district dibrugrah revealed 6.7% infection of wuchereria bancrofti in labour population with microfilaria (mf) rate of 7.6% in males and 5.9% in females. the mf rate increased progressively with the age which however, dropped in 31-40 age group of males and in 41-50 age group of females. chronic filariasis diseases rate was 2.7%. the involvement of genitals in manifesting chronic filariasis was significantly higher than of the lower extremit ... | 1998 | 10389521 |
| lymphatic filariasis in two distinct communities of upper assam. | current status of bancroftian filariasis among two distinct communities of upper assam was evaluated. high prevalence (10.3% mf rate) in tea workers descendents of tribals migrated from endemic states such as orissa, bengal, uttar pradesh and southern states of india, were recorded. among non tea workers (indigenous population) significantly low mf rate was found in spite of the fact that both the communities are living in close vicinity and in similar ecological and mosquitogenic conditions. cu ... | 1999 | 10810596 |
| temporal variations in biting density and rhythm of culex quinquefasciatus in tea agro-ecosystem of assam, india. | temporal changes in the biting density and host-seeking periodicity of culex quinquefasciatus, the vector of bancroftian filariasis, were studied for two years in the tea agro-ecosystem of assam, india. average biting density of the vector varied from 0.8/hour in december to 13.3/hour in march. minimum temperature was found to have a limiting effect on the biting density of the vector mosquitos. multiple regression analysis showed that the rainfall and minimum temperature were significant factor ... | 1999 | 10928380 |
| transmission of bancroftian filariasis in tea agro-ecosystem of assam, india. | tea industry is a labor intensive agro-industry and filariasis is mostly localized among the tea garden workers in assam. the workers live inside the gardens in colonies. studies conducted in two cosecutive years revealed that among the host seeking culex quinquefasciatus average infection rate was 4.6% and with 2.1 larvae per mosquito. the overall prevalence of infective mosquitos was 0.8% with average l3 load of 2.0 per mosquito. the probability of infected mosquitos surviving to have complete ... | 2001 | 11944721 |
| a focus of lymphatic filariasis in a tea garden worker community of central assam. | a survey for lymphatic filariasis was conducted among tea garden workers of central assam. of the 656 night blood samples examined, 31 were found positive for wuchereria bancrofti parasite (microfilaria rate 4.7%). microfilaria rate was higher in male (7.3%) than females (2.1%). culex quinquefasciatus was incriminated as vector mosquito. | 2004 | 15907073 |
| development of physiological resistance and its stage specificity in culex quinquefasciatus after selection with deltamethrin in assam, india. | the study investigated the development and stage specificity of physiological resistance to insecticides in a colony of culex quinquefasciatus say (diptera: culicidae) mosquitoes, which are vectors of bancroftian filariasis in india, after selection with deltamethrin. resistance was selected by exposing the larvae to the concentration of deltamethrin that caused 50% mortality in the tested population (i.e., lc50). under continuous selection pressure, the lc50 increased steadily in subsequent gen ... | 2009 | 19820823 |