A comparison of the clinical features of poliomyelitis in adults and in children.

ONE of the remarkable changes that have occurred in poliomyelitis in many parts of the world in the past twenty years is the rise in its incidence in older age groups.1 Formerly uncommon in others than the pre-school child, the disease has gradually become frequent in those five to nine years old and is, at present, increasing in prevalence in even older persons. As a matter of fact, it is not at all rare today for poliomyelitis to affect patients in the third and fourth decades of life. Because of this changing age frequency, the term "infantile paralysis" is no . . .