THIllS study is suggested because of the increasing difficulty in securing compliance with school requirements in reference to vaccination, due to the activity of antivaccinationists in exaggerating both the number and character of these unfortunate accidents. Cancer, consumption, typhoid fever, ulcerated stomach, leprosy, diphtheria, syphilis and many other diseases have been charged to vaccination, but these require no discussion here. Several cases of cerebro-spinal meningitis have been reported as following vaccination; but here again no causal relation has been established. Septicemia in various forms, due to invasion of pathogenic organisms at some stage of the -vaccinal process from accident or carelessness is occasionally noted. Recently a Philadelphia court awarded a negro $5,000 damages for the loss of a leg, said to be due to septicemia, following vaccination by a city physician in 1910. Carelessness was alleged. The verdict, however, has been set aside by a higher court. A case is now pending in Chestertown, Md., where the commissioners are sued for $10,000 for the death of a negro child through alleged carelessness in vaccination by the county physician. Recently, three cases of anterior poliomyelitis following vaccination in from ten to twenty days, have been reported from New York State. So far as is known, these children did not come in contact with each other or with other cases of poliomyeltis, so that the parents naturally concluded that vaccination was at least a factor in some way. While cases of the classes enumerated are a drawback to enforcing vaccination, they are insignificant as compared with tetanus, and it is in a study of this disease in its relation to vaccination that we are chiefly interested. I have been able to secure more or less complete histories of 82 cases occurring in the United States and Canada since 1899. Some of these, prior to 1902, were discussed by Wilson,* and are taken from his paper; some more recent Philadelphia cases are taken from Wadsworth'st report of coroner's cases and from records of the coroner's court. I wish here to express to Doctor Wadsworth my appreciation of his assistance in securing copies of these records. First analyzing these somewhat in detail we note the following facts. Case 1. Pushed against door by playmate at school. Scab torn off. Tetanus developed in 24 hours. Case 2. Large, deep ulcer present 20 days after vaccination. Arm dirty.
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