6Robertson I D, Blaekmore D K. Occupational. exposure to Streptococcus suis type 2 [J]. Epidemiol Infect, 1989, 103 (1): 157- 164.
7Staats J J, Feder I, Okwumabua O, et al. Streptococcus suis: past and present [J ]. Veterinary Research Communications, 1997, 21: 381.
8Bochud P Y, Calandra T, Francioli P, et al. Bacteria due to viridans streoptocei in neutropenic patients: A review [J]. Am J Med, 1994, 97 (1): 256-264.
9Seblievert P M. Role of Superantigens in human disease [J].J Infect Dis, 1993, 167 (5): 997-1002.
10Sasaki H. Alpha-hemolytic streptococcal septicemia and meningitis in immnnocompromised chidren [J]. Kansenshogaku Zasshi, 1991, 65 (8): 1003-1008.