0.1648 Standard error of the difference': -/0.7922 X 0.2078 + 0.6274 X 0.3726 255 0Q395 Difference 0.1648_ There oie'gfancjard error of difference 0.0395~ Hence, the difference is highly significant and in detection Vi-agglutination is superior to H-agglutination.
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