Abstract
We examined neutralizing antibody for M. pneumoniae. in 106 healthy person Proportion of the antibody positive rate was higher in fourth decades (64 per cent) than in infants and children (20 per cent). Using diphasic media 8 strain of the agent were recovered from 38 patients with respiratory diseases, most frequently in atypical pneumonia.
In this three-year study 19 of 72 (26 per cent) cases with atypical pneumonia of adult had serological evidence of Mycoplasmal infection by CF test, while cold agglutinins developed in 21 cases (29 per cent). 14 of 21 cases with positive cold agglutinin had evidence of Mycoplasmal infection.
Mycoplasmal pneumonia was found frequently in spring and early summer. Many of them occured in second decades and rarely over fifth decades. Cough and fever were most predominating symptoms. Body temperature was 38.6°C and duration of fever was 5.7 days. Physical findings in the chest were mild. On x-ray examination involvement of unilateral lower area was seen in 60 per cent of the case, and this findings disappeared in 23 days. The sedimentation rate was markedly elevated. The white blood cell count was mostly remained normal.
