In this retrospective study, we measured enterovirus D68 (EV-D68) genomic RNA in wastewater solids longitudinally at 2 California, USA, wastewater treatment plants twice per week for 26 months. EV-D68 RNA was undetectable except when concentrations increased from mid-July to mid-December 2022, which coincided with a peak in confirmed EV-D68 cases.
Keywords: California; EV-D68; United States; acute flaccid myelitis; concentrations; enterovirus D68; respiratory infections; trends; viruses; wastewater; zoonoses.