Pneumococci are said to occur in the saliva of about 20 per cent, of normal individuals. Recently this question has been gone over again and the results obtained appear very interesting.1 Frost and his co-workers, following the usual method hitherto in vogue, determined the presence of pneumococci by means of inoculations of rabbits. In this way they found the organism 18 times—36 per cent.—in the saliva of 50 different individuals. They also found that the frequency with which the germ occurs in saliva varies with the season of the year: 23 per cent, of the salivas examined in the fall giving positive results, 43 per cent. in the winter, and 50 per cent, in the spring. The pneumococcus also appeared more frequently in the saliva of the individuals in this series who worked indoors than in those working outdoors.
It is very desirable that work of this nature be
THE OCCURRENCE OF PNEUMOCOCCI IN SALIVA OF HEALTHY PERSONS. JAMA. 1905;XLV(3):197. doi:10.1001/jama.1905.02510030055006
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