WASHINGTON (AP) — The Biden administration says the U.S. is setting up a $1.7 billion national network to identify and track worrisome coronavirus mutations whose spread could trigger another pandemic wave. White House officials Friday unveiled a strategy featuring three components: a major funding boost for the Centers for Disease Control and Prevention and state health departments to ramp up gene-mapping of coronavirus samples; the creation of six “centers of excellence” partnerships with universities to conduct research and develop technologies for gene-based surveillance of pathogens; and building a data system to better share and analyze information on emerging disease threats. The effort relies on money approved by Congress as part of President Joe Biden’s coronavirus relief package.