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LIVE POLIO IRUS VACCINES

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296<br />

296<br />

Efficacy-Laboratory Evidence<br />

Efficacy-Laboratory Evidence<br />

TABLE 6. ANTIBODY LEVELS AT INTERVALS AFTER VACCINATION OF INFANTS IN WHOM INTESTINAL<br />

INFECTION DEVELOPED<br />

Age When Mean Pre- Mean Postvaccination Antibody Titers*<br />

Vaccinated vaccination (Days After Vaccination)<br />

(days) Antibody 21 - 45 46 - 75 '7 - 135<br />

Titer*<br />

0 - 7 30 (16)** 21 (10) 9 (10) 14 (14)<br />

8 - 35 24 (17) 15 (11) 15 (16) 34 (17)<br />

36 - 70 10 (18) 17 (27) 54 (17) 128 (4)<br />

71 - 140 7 (10) 151 (21) 03 (5) 51 (7)<br />

Entire<br />

Group 16 (61) 29 (69) 26 (48) 31 (42)<br />

* Geometric means; reciprocals of serum dilution. Titer of

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