In March, 1926, Ferry and Fisher,1 in a preliminary report, described the preparation of measles toxin and antitoxin from a green-producing streptococcus, which they called Streptococcus morbilli, isolated by them from blood in early cases of measles. In 1927, Ferry2 described in detail later experiments with this organism and its toxin and antitoxin, on both man and the animal, and in a paper, soon to be published, Ferry and Noble3 have compared this streptococcus with other green-producing micrococci by means of cultural and serologic reactions.
At this time a condensed report is presented of the clinical work recently conducted with measles antitoxin at the Children's Hospital and at Herman Kiefer Hospital, Detroit, and with measles toxin and antitoxin at the Children's Convalescent Home, Farmington and the Wayne County Training School, Northville.
It should be mentioned that, previous to the experiments included in this report, measles antitoxin was