from a total of 1,823 samples , 557 ( 30.5 % ) were positive : 86 ( 4.8 % ) polioviruses , 77 ( 4.2 % ) coxsackieviruses b , 223 ( 12.2 % ) echoviruses , and 127 strains ( 7.0 % ) of unidentified viruses .
C0206435
polioviruses
C0042776
viruses