Ramírez E, Espiñeira E, Sánchez G
Sección Virología, Instituto de Salud Pública de Chile, Santiago de Chile.
Rev Med Chil. 1990 May;118(5):495-9.
A total of 1248 females were studied to determine immunity against rubella. A higher socio-economic subgroup (n = 789) and a lower one (459) were defined. Inhibition of hemagglutination was used to detect immunity. Positive results were obtained in 95% of females and no differences were detected for both groups. 78% of positive titers fell in the dilution range 1:20 to 1:80.
共对1248名女性进行了研究，以确定她们对风疹的免疫力。定义了一个较高社会经济亚组（n = 789）和一个较低社会经济亚组（459）。采用血凝抑制试验检测免疫力。95%的女性获得了阳性结果，两组之间未检测到差异。78%的阳性效价落在1:20至1:80的稀释范围内。
