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Congenital infections with reovirus.

Congenital reovirus, type 2 infections were produced after intraperitoneal inoculations of brood mothers on the 1st, 3rd, 6th, 10th, and 15th day of gestation. The offspring presented with a varied syndrome. About a quarter of a total of over 200 mice showed symptoms within the first 14 days of life; namely, lassitude, retarded growth, and roughening of fur. Some died, apparently of respiratory or renal failure. Post mortem examination showed marked interstitial pneumonia and subcortical renal tubular necrosis. Reovirus was isolated in high titer from the kidney and lungs as well as from blood…