Chuttani C S, Prakash K, Vergese A, Gupta P, Chawla R K, Grover V, Agarwal D S
Bull World Health Organ. 1973 Jun;48(6):754-5.
A field trial was carried out with a vaccine containing 300x10(9) killed S. typhi (strain Ty58) per tablet. A total of 12 564 children aged 1-15 years were given 3 tablets of the vaccine or a placebo at the rate of one tablet on each of 3 consecutive days. The results indicated that the vaccine, in its present form and at this dosage, gives no protection.
对一种每片含300×10⁹ 伤寒杆菌(Ty58株)死菌的疫苗进行了现场试验。总共12564名1至15岁的儿童,连续3天每天服用1片,共服用3片该疫苗或安慰剂。结果表明,以目前的形式和剂量,该疫苗没有防护作用。