The Department of Health and Human Services, specifically the Centers for Disease Control and Prevention (CDC), is seeking contractors for the provision of serological assays aimed at detecting and characterizing influenza viruses. This contract encompasses a 12-month base period with four additional 12-month option periods, focusing on testing immunological responses from human samples collected during vaccine effectiveness studies, randomized controlled trials, and outbreak investigations using Hemagglutination Inhibition (HAI) assays. The services are critical for understanding vaccine efficacy and managing influenza outbreaks, with the government supplying necessary standard operating procedures, proficiency panels, and controls to ensure proper assay performance. Interested parties should contact Jennifer Gartzke at jgartzke@cdc.gov or 404-498-0020 for further details, as this opportunity is set aside for small businesses under the SBA guidelines.