PAPOLG and pyelonephritis: Although the papGI allele is relatively rare amongst clinical urinary isolates, it was surprisingly detected in 7% of the present isolates as follows; as the only papG allele in 1% of the cystitis isolates; in 3% each in combination with either papGII or papGIII, and finally as part of a concurrent combination with both papGII and papGIII genes in 1% of pyelonephritis isolates.