AIRPORTS: THE NEW FRONTIER IN BIOSECURITY? — When Beijing lifted its "zero Covid" policy late last year, a small CDC program tracking Covid-19 variants in international passengers arriving at U.S. airports kicked into high gear, Krista writes. The program, started in late 2021 in response to the Delta variant first detected in India, collects voluntary nasal swabs from arriving passengers and has tested wastewater from arriving aircraft to determine what Covid strains are entering the U.S. It's now active in seven U.S. international airports after adding operations in Seattle and LAX to target hundreds more flights carrying passengers from China. The CDC is also pursuing talks with airlines and port authorities to collect samples from additional international flights' wastewater after they land. The long game: The small but growing Traveler Genomic Surveillance program, run by the CDC in partnership with the biotech firm Concentric by Ginkgo and the airport testing company XpresCheck, is seen by administration officials and public health experts as part of a revolution in biosafety infrastructure — and a critical plank of national security in the post-pandemic era. As the CDC program expands geographically and looks for more pathogens, it could function as an early warning system for where and when dangerous viruses and bacteria, natural or otherwise, enter the country. And it works: As Omicron emerged, the program detected BA.2 and BA.3 subvariants at airports early. In a pilot project at JFK this summer, in which staff collected wastewater samples on flights arriving from Europe, the program identified the same SARS-CoV-2 sequences predominantly circulating in the flights' countries of origin. Getting buy-in: Participation among passengers in the voluntary sample collection program is rising, the CDC says, but it's still relatively low. Adding information from aircraft wastewater would improve the government's visibility into what's arriving at U.S. borders. Setting up routine wastewater surveillance from aircraft will be a bigger challenge, requiring coordination with airlines and airport authorities, and the potential reputational risk for airlines, experts say. WELCOME TO TUESDAY PULSE — We can't wait to binge on Vice's podcast dropping today about Havana Syndrome, the mysterious and sometimes crippling illness that's been afflicting U.S. diplomats since 2016. Any personal theories to share before Jon Lee Anderson and Adam Entous unravel the mystery? Send your favorite explanation, news and tips to kmahr@politico.com and dpayne@politico.com. TODAY ON OUR PULSE CHECK PODCAST, Lauren Gardner talks with Helen Collis about soaring Covid and seasonal infections like Strep A and RSV in the U.K. and how they've compounded the NHS' long-term problems, such as immense waiting lists and a chronically understaffed and burnt-out workforce, and their effect on patient services.
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