Before revision: Following the 2022-23 reopening surge of COVID-19 cases in China, airplane wastewater surveillance began to be employed as a less intrusive method of monitoring for potential variants of concern arising within specific countries and regions
After revision: .Following the 2022-23 reopening surge of COVID-19 cases in China, airplane wastewater surveillance began to be employed as a less intrusive method of monitoring for potential variants of concern arising within specific countries and regions