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LIVE POLIO IRUS VACCINES

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350<br />

Efficacy-Laboratory Evidence<br />

TABLE 8B. ANTIBODY STATUS, BEFORE AND AFTER VACCINATION, OF THE 48 CHILDREN LACKINCG<br />

<strong>POLIO</strong>V<strong>IRUS</strong> ANTIBODIES BEFORE INGESTION<br />

OF MONOVALENT ORAL <strong>POLIO</strong>MYELITIS VACCINE, GROVE<br />

East, 1959<br />

Nmber of Persons Negative*, by Poliovirus Type<br />

Pre-feedi<br />

Post-feding<br />

Total No. No. of Conplete<br />

Negative No. of of Conversions to<br />

to Type Person 1 2 3 1and 2 and3 2ad3 1,2atives eTriple Positive<br />

1 7 0 7<br />

2 1 0 1<br />

3 5 0 5<br />

land2 2 2 2 O<br />

1 and3 14 2 2 12<br />

2 and 3 1 0 1<br />

1,2, and 3 18 O 18<br />

Totals 48 O 2 O O 0 0 4 44<br />

* Titer of

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