Poliovirus surveillance by examining sewage specimens. Quantitative recovery of virus after introduction into sewerage at remote upstream location.

Abstract in brief

• Researchers tested the feasibility of checking sewage systems for poliovirus by introducing known amounts into Helsinki's sewage network.
• They found infectious poliovirus in grab samples taken downstream on four consecutive days across three experiments.
• A simple method for virus concentration proved effective, indicating that monitoring sewage could detect poliovirus in large populations, suggesting it’s a viable way to track silent virus circulation.