This is despite the implementation of various containment measures and the availability of COVID-19 vaccines, giving rise to "serious cause for concern," say the researchers, who call on governments and policymakers to thoroughly investigate the underlying causes.
The main markers the Centers for Disease Control and Prevention (CDC) uses to track COVID activity showed small rises Friday from very low levels, including wastewater SARS-CoV-2 detections, which rose from the minimal to low level over the past week....