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Table 1 Differences in numbers of samples classified as "sufficiently protected" (serumdilution vs. concentration C in IU/ml), n = 2564

From: Immunity status against poliomyelitis in Germany: Determination of cut-off values in International Units

Polio 1

C<C0

C>=C0

Serum dil.< 1/4

90

11

Serum dil.>=1/4

12

2451

Polio 2

  

Serum dil.< 1/4

97

17

Serum dil.>=1/4

1

2449

Polio 3

  

Serum dil.< 1/4

182

0

Serum dil.>=1/4

82

2300