"The goal of this study was to survey the concentrations of rotaviruses (RVs) and enteroviruses (EVs) in raw sewage using reverse transcription droplet digital PCR (RT-ddPCR) and to compare the use of ViroCap filters, polyethylene glycol/sodium chloride (PEG/NaCl) precipitation and mixed cellulose ester (HA) filter methods for virus recovery." -- Abstract.