The 9th wave of Covid is in very strong decline, while waiting for the – very likely – 10th. What if the future of infectious disease surveillance went through combined tests, making it possible to detect both Covid and influenza, or even an infection with RSV (the respiratory syncytial virus, responsible in particular for bronchiolitis in children? )? “If we want to switch Covid monitoring to flu monitoring, it would be interesting to reach a happy medium through this kind of multiple test”, estimates epidemiologist Mircea T. Sofonea.