No general agreement has been reached regarding the question of a common causal virus of herpes zoster and varicella. Some are of the opinion that the two diseases are etiologically related; others believe that the cause of herpes zoster is entirely different from that of varicella. The cases to be presented support the view that herpes zoster and varicella may be manifestations of the same virus.
REPORT OF CASES
On Oct. 4, 1941, the care of two children, P. C. W. and K. W. (ages 4 and 1½ years, respectively), was assumed by their grandparent, L. K. M. On October 5 L. K. M. became ill, but she continued to care for the children until October 12. On October 10 an eruption appeared on the right side of the back and the right thigh and leg of L. K. M., accompanied by pain, itching and general malaise. Herpes zoster was