本文报道在轮状病毒感染流行期间,采用随机和双盲法给178名婴儿8～12月龄口服单剂0.5ml RIT4237减毒株牛轮状病毒疫苗或安慰剂,以评价该疫苗预防轮状病毒感 This article reports that during the epidemic of rotavirus, a randomized and double-blind method was used to treat 178 infants aged 8 to 12 months with a single dose of 0.5 ml RIT4237 attenuated bovine rotavirus vaccine or placebo to evaluate the efficacy of the vaccine in preventing rotavirus Sense of the virus