Since the value of vaccine in the prevention and treatment of whooping cough is still not generally admitted, although the burden of proof seems unquestionably in its favor, the following experience with its use as a prophylactic measure seems worthy of report.
At the Children's Home in Schenectady, one of the forty-six inmates developed whooping cough on or about Nov. 27, 1917, but because of failure of diagnosis was allowed to mingle for nearly a week with other children, after which he was isolated in a separate building. It was later learned that during this time he was known to have whooped and vomited.
With the view of undertaking measures to prevent spread of the infection through the Home, an effort was made to confirm absolutely the diagnosis. An epidemic of the disease was well under way in the city at the time, and several of the whooping cough patients