Toxoplasmin skin sensitivity in Calcutta area.

Toxoplasmin skin test was performed on 574 suspected and 24 control cases. A positive reaction was noted in 92 of 481 ophthalmological cases; two of 17 lymphadenopathy cases; none in 36 cerebral palsy cases and four of 40 miscellaneous cases comprising pyrexia of unknown aetiology, recurrent abortions etc. None from the control group gave a positive reaction. The significance of the results is discussed and the need for further studies employing other investigative methods is stressed.