PEDIATRICS Vol. 47 No. 3 March 1971, pp. 632-633
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Trivalent Oral Polio Vaccine: Disappointing Results

Shanti Ghosh 1

1 Department of Pediatrics, Safdarjung Hospital, New Delhi

I was interested to read the paper on trivalent oral polio virus vaccine trials by Hardy and colleagues in your journal of March 1970,1 which reached here only recently. It prompts me to state the results we have achieved in the babies attending the Well Baby Clinic, who received three doses of trivalent oral polio vaccine at 4 to 6 weeks interval beginning at 3 to 6 months of age.2 Our results are disappointing and compare with the results achieved in some other tropical countries, particularly Nigeria.