AGGLUTINATION IN PERTUSSIS

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Abstract
INTRODUCTION The work herewith reported is part of a series of studies on pertussis begun by the Bureau of Laboratories of the New York City Health Department in 1914 under direction of Dr. A. W. Williams.1The subject of agglutination was taken up chiefly because of the different reports given by various authors as to the value of agglutination and of complement fixation in the early clinical diagnosis of pertussis, and because of the comparatively few definite reports made on the value of former test. CRITICAL STATEMENT OF PREVIOUS FACTS All authors (at least those who give some details about their work) are agreed that agglutinins forB. pertussismay be produced in most test animals but statements are vague as to the time and amounts of production and the condition under which they are produced. The general statement is usually made that after several inocula tions

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