Influenza and SARS-CoV-2 Integrated Surveillance. Laboratory Testing Algorithm

The Influenza and SARS-CoV-2 Integrated Surveillance. Laboratory Testing Algorithm outlines the laboratory testing strategy for integrated influenza and SARS-CoV-2 surveillance. It defines criteria for sample collection, it details different surveillance levels, including sentinel site laboratories conducting initial tests and National Influenza Centers (NICs) performing confirmatory testing and advanced analyses. The document also covers testing for other respiratory viruses and provides guidance on sample selection for research, emphasizing clinically significant cases (e.g., severe, vaccinated, or immunocompromised patients).