Dash A P, Mahapatra N, Hazra R K, Acharya A S
Regional Medical Research Centre (ICMR), Bhubaneswar, Orissa, India.
Southeast Asian J Trop Med Public Health. 1998 Mar;29(1):137-40.
A three year longitudinal study was carried out to quantify the different parameters of filarial transmission in an endemic area of Orissa State, India. Parasitological surveys revealed mean microfilaria rate, microfilaria density and median microfilaria density (MFD-50) to be 9.41, 19.23 and 7.33, respectively. The per man hour density of the vector, Culex quinquefasciatus varied from 24.2 to 66.0 with a peak in January. Infection rate varied from 0.9 to 27.5%, while infectivity rate ranged between 0.0 and 15.2%. Infectivity rate showed high correlation with microfilaria rate and per man hour density of adult mosquito. The highest numbers of first stage larvae (L1), second stage larvae (L2) and third stage larvae (L3) per mosquito were found to be 25, 22 and 11, respectively. Average L3 load per infective mosquito ranged from 1.0 to 7.2. L3 load showed high correlation with microfilaria rate (r = 0.845, p < 0.01) while no correlation was seen with microfilaria density.
在印度奥里萨邦的一个流行地区开展了一项为期三年的纵向研究，以量化丝虫传播的不同参数。寄生虫学调查显示，平均微丝蚴率、微丝蚴密度和微丝蚴密度中位数（MFD - 50）分别为9.41、19.23和7.33。媒介致倦库蚊的每人每小时密度在24.2至66.0之间变化，1月份达到峰值。感染率在0.9%至27.5%之间变化，而感染性率在0.0%至15.2%之间。感染性率与微丝蚴率和成年蚊子的每人每小时密度高度相关。每只蚊子中发现的第一期幼虫（L1）、第二期幼虫（L2）和第三期幼虫（L3）的最高数量分别为25、22和11。每只感染性蚊子的平均L3负荷在1.0至7.2之间。L3负荷与微丝蚴率高度相关（r = 0.845，p < 0.01），而与微丝蚴密度无相关性。
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