Result 43 (21.7%) were bacillus dysenteriae,2 (1 %)were salmo nella,153(77.3%) were not detected having pathogenic.

• 结果 :198例中检出致病菌 4 5例 ；总检出率为 2 2 .；72%25；其中志贺氏菌 4 3株 (占 2 1