translate English to French: Of the 201 viral isolates propagated, 180 (89.5%) were identified by the serum neutralization test as poliovirus types 1, 2, or 3; 16 (8%) were identified as coxsackie B viruses; and 5 (2.5%) could not be identified by the methods used.
Parmi ceux-ci 180 (89.5%) furent identifiés par séroneutralisation comme étant des poliovirus type 1, 2 ou 3, alors que 16 (8%) étaient des coxsackievirus type B et que 5 (2.5%) ne purent être identifiés.