Article Text


  1. R. G. Mitchell,
  2. C. A. Green
  1. Department of Bacteriology, Royal Victoria Infirmary, Newcastle-upon-Tyne


    Four hundred and forty-six patients' sera from a hospital blood transfusion department in Newcastle were examined for toxoplasma antibodies by a haemagglutination test.

    Forty per cent. of the sera gave positive reactions, and an increase in the percentage of positive sera was found with increasing age, rising to over 60% at the age of 70 and over. A wide range of titres was demonstrated amongst positive cases, the highest titres approaching those obtained in two cases of active toxoplasmosis.

    In a separate survey, no quantitative agreement was found between dye test titres and haemagglutination titres.

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