Poliovirus(4) serology(2) SARS-CoV-2(1) storage(1) Real-time PCR(1) Containment(1) Vaccine(1) Virus shedding(1) antibodies(1) Phagemids(1) temperature(1) vaccine-derived poliovirus(1) Automated NA extraction(1) Neutralization assay(1) L20B cell line(1) reversion(1) CD155(1) stability(1) Europe(1) real-time RT-PCR(1) Direct detection(1) nucleic acid extraction(1) IPV(1) mucosal immunity(1) Environmental surveillance(1) COVID-19(1) Humidity(1) VDPV(1) virus inactivation(1) pseudovirus(1)