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An Epidemiologic Study

Milton Alter, MD, PhD; Ladislao Olivares, MD

Arch Neurol. 1970;23(5):451-459.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

POPULATION studies of the frequency of multiple sclerosis (MS) carried out in countries at different latitudes^1-13 have established that MS is common in temperate climates and rare in regions near the equator. This peculiar geographic distribution of MS may constitute a key to the cause of the illness if its meaning can be properly understood. However, before etiologic hypotheses based on the distribution of MS are elaborated, it is well to realize that there are still many areas of the world in which the frequency of MS has not yet been adequately determined. Latin America constitutes one such area. Existing information is in the form of clinical impressions¹⁴ or reports from special clinics¹⁵ which are hardly representative of populations as a whole.

The present report provides the first data on MS frequency in Latin America obtained by an epidemiologic analysis of a well-defined population. It . . . [Full Text PDF of this Article]

Author Affiliations
Minneapolis; Mexico City

From the Neurology Service, Minneapolis Veterans Administration Hospital, University of Minnesota, Minneapolis (Dr. Alter), and the Centro Hospitalario 20 de Noviembre, Mexico City (Dr. Olivares).

Footnotes
Accepted for publication May 1, 1970.

Reprint requests to Veterans Administration Hospital, 54th St and 48th Ave S, Minneapolis 55417 (Dr. Alter).

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