It was shown that 3 isolates(A1, A2 and CAM) fit into Group 1(WB), 2(CH2 and CH3) into Group 2(JH), while 4 (C1,C2,BP and CDC) into Group 3(GS).

• 结果表明， A1、 A2 和 C A M 属第1 型（ W B）； C H2 和 C H3 属第2 型（ J H）；