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LIVE POLIO IRUS VACCINES

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196 Safety-Field Evidence of Safety<br />

TABLE 6. RELATION BETWEEN POSITIVE <strong>POLIO</strong>V<strong>IRUS</strong> ISOLATION FROM STOOLS AFTER ORAL ADMIN-<br />

ISTRATION OF <strong>LIVE</strong> <strong>POLIO</strong>V<strong>IRUS</strong> VACCINE AND STATUS OF INFANTS BEFORE FEEDING<br />

(SEMI-SCHEMATIC)<br />

V<strong>IRUS</strong> TYPE<br />

TYPE<br />

1 2 3<br />

TYPE<br />

1 2 3<br />

TYPE<br />

1 2 3<br />

Positive virus isolation (+) (+) (+) - (+)<br />

after feeding + + + - (-) (-) (-) (-)<br />

Titers of neutralizing<br />

antibody before feeding

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