page_title: 1916 New York City polio epidemic
section_title: Progress of the epidemic
hierarchical_section_title: 1916 New York City polio epidemic / Progress of the epidemic
caption_attribution_description: English: 1916 New York polio epidemic chart
context_page_description: The 1916 New York City polio epidemic was an epidemic of polio ultimately infecting several thousand people, and killing over two thousand, in New York City, primarily in the borough of Brooklyn. The epidemic was officially announced in June 1916, and a special field force was assembled under the authority of Dr. Simon R. Blatteis of the New York City Health Department's Bureau of Preventable Diseases, with broad authority to quarantine those infected with polio and institute hygiene measures thought to slow the transmission of the disease. Polio was a poorly understood disease in this era, and official efforts to stem its spread consisted primarily of quarantines, the closure of public places, and the use of chemical disinfectants to cleanse areas where the disease had been present. Special polio clinics were established at various locations in the city for the treatment and quarantine of patients.
  In addition, many informal remedies or preventative measures were tried by the frightened population, while public activities largely fell silent. Ultimately, the epidemic subsided in the winter months, with the cause remaining a mystery to investigators and the public.
context_section_description: On Saturday, June 17, 1916, an official announcement of the existence of an epidemic polio infection was made in Brooklyn, New York. Over the course of that year, there were over 27,000 cases and more than 6,000 deaths due to polio in the United States, with over 2,000 deaths in New York City alone.
  According to the figures compiled by the New York City Department of Health, by June 1916 there were 114 verified cases of infantile paralysis in Brooklyn, practically all of them in the old South Brooklyn section. The outbreak appeared to be confined to infants and young children, less than 10% of the cases occurring in children over five years of age. The Department of Health stated that a careful investigation had failed to substantiate the view that the schools had a share in spreading the disease, pointing out that over 90% of the children were under the typical school age; that the cases were not limited or even more prevalent in any one school district, and that they were not at all limited to children in the same classroom.
  On June 26, 1916, the Department of Health issued a bulletin noting 37 additional cases of infantile paralysis reported to the Department of Health making a total to date of 183 cases in Brooklyn. A study of the situation indicated that the disease was spreading in a southerly direction and was invading the Parkville section, to the east of Bay Ridge, Brooklyn. In the week preceding that report, 12 deaths were reported from anterior poliomyelitis (infantile paralysis) in the Greater City, eleven occurring in Brooklyn, almost as many as occurred in the entire city during the year 1915, when 13 deaths from this disease were reported for the entire year in the Greater City. The twelfth case was reported to the Department from Staten Island. It was located in an Italian-American district, like most of the Brooklyn cases.
  On June 28, 1916, another 23 cases were reported, bringing the total in Brooklyn to 206 cases. On July 1, 1916, 53 new cases and 12 deaths were reported in New York City, making a total of 59 deaths since the outbreak of the epidemic. Both illnesses and deaths thereafter continued to increase on a daily basis throughout the month of July, peaking in early August, by which time the total number of cases was in the tens of thousands, and the number of deaths was over one thousand. The disease then began a slow decline for much of the remainder of the year.
caption: Chart of illnesses and deaths in the 1916 New York polio epidemic.
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