Viremia in Infection Due to Echo Virus Type 9

VIREMIA during the course of infections with ECHO viruses has been reported in only a few cases. Neva and Zuffante1 demonstrated virus in 1 of 10 blood specimens collected two to five days after onset of Boston exanthem disease (ECHO virus Type 16), and Sabin and Wigand2 have reported isolation of ECHO virus Type 9 from the blood of 2 patients, 1 thirty-six hours before, and the other within twenty-four hours after the appearance of the first sign of illness. The latter authors failed to find ECHO virus Type 9 in 22 blood specimens collected two to five days after . . .