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International Journal of Epidemiology 2002;31:187-188
© International Epidemiological Association 2002

Infectious Diseases

Commentary: The Polio Model—Does it apply for polio?

Jon Kim Andrus

Institute for Global Health, University of California, San Francisco, CA 94105, USA.

Nielsen et al. conducted a retrospective, observational study of hospital record data from 1940 to 1953 in Denmark to evaluate the deductions of the old polio model.1 The authors defined polio as those patients ‘with a discharge diagnosis of non-paralytic polio, paralytic polio, suspected polio or primary lymphocytic meningitis’. Severity was graded progressively from non-paralytic polio, to paralytic polio, respiratory paralysis, and death. The authors found the polio . . . [Full Text of this Article]

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