【摘要】 本文根据洞庭湖区各类血吸虫病传染源污染有螺湖洲及水体的行为学特点,提出了一个计算各类传染源实际污染指数的数学公式。初步认为可作为评价各类传染源实际污染能量的定量指标和选择化疗对象的依据,并可作为评价各类疫区的疫情变化以及考核化疗控制血吸虫病传播效果的定量依据。更多还原

【Abstract】 Based on the behaviour characteristics of different S.japonica sources of infection to contaminate the snail infested beaches or waters in Dongting lake region, a mathematical formula was devised : IRC = Nt.P1 .P2.E.Q.10-5. In this formula, Nt= active frequency of exposure to snail infested beaches and waters, P1=rate of discharging feces in field, P2 = egg positive rate, E = intensity of infection- EPG(XA), Q = quantity of feces discharged in the field by infectious sources daily. It is stated that the formula can evaluate the contaminating energy of infectious sources, can be a fundation for selecting target for chemotherapy, can assess the fluctuation of endemic situations in different areas and check up the effect of chemotherapy in control of transmission.更多还原