Giardia duodenalis assemblages and genotypes in wastewater samples of four cities in China during 2006–2009.

aAll data on specific genotypes and subtypes are based on sequence analysis.bDifferent sequencing results in different PCR replicate analyses of each sample. B2–B16 are new subtypes identified in this study.cBased on the occurrence of underlying peaks in DNA sequencing trace files; the subtype identity of assemblage B could not be established under such a circumstance.dNo. of positive samples/No. of samples (positivity in percentage) based on PCR analysis of the tpi gene.