抄録
In 1973 and 1974, an epidemic of acute hemorrhagic conjunctivitis (AHC) with a tendency of less frequent con-junctival hemorrhage occurred among the staff of the National Railways and their family in Sendai area. Four strains of AHC virus and 4 strains, 1 of type 7 and 3 of type 8, of adenoviruses were isolated from 22 conjunctival swabs of the patients. Thirty-six (66%) out of 55 cases examined were proved serologically to be of AHC virus infection, and 7 cases (13%) were of adenovirus infection. Clinically, infrequent association of hemorrhagic conjunctivitis was most remarkable. Only 10 cases (28%) had detectable signs of hemorrhagic conjunctivitis. There were no substantial changes in antigenicity and optimum temperature for virus multiplica-tion between prototype and isolated strains. The isolated strains, however, seemed to be less neutralizable and less producible at 29°C than prototype strain.
