SECOND WORKER WITH BIRD FLU PROMPTS QUESTIONS — Federal officials said Wednesday that the second human case of avian flu tied to the current outbreak in cattle wasn’t unexpected, given worker exposure to infected herds, as they continue to urge states to monitor for the virus. What we know: The CDC said Wednesday that a farmworker in Michigan has the virus. The case follows another infection of a dairy worker in Texas. Public health officials continue to advise that risk to the public is low. But the second confirmed case shows the virus “remains in circulation and still presents a serious occupational hazard to people who have exposure to raw milk,” said Jennifer Nuzzo, an epidemiologist and director of the Pandemic Center at the Brown University School of Public Health. Here's what we still don’t know about the U.S. outbreak: When was the farmworker tested? While the CDC confirmed the sample on Tuesday night as positive, state officials, citing privacy concerns, won’t share when the second farmworker was first tested for avian flu. Will drugs and vaccines be effective against the latest detected virus? Government officials say two vaccine candidates in development will be well matched against the virus, but genomic sequencing data expected soon will provide more certainty as to whether the virus is susceptible to them or to antivirals the U.S. has stockpiled. Dawn O'Connell, HHS assistant secretary for preparedness and response, told reporters Wednesday that the government has begun to prepare about 4.8 million vaccine doses. What’s happening in other states and farms where avian flu hasn’t been detected? Federal officials praised Michigan’s surveillance system for monitoring exposed workers and identifying the latest human case. However, Nuzzo said not all states are monitoring for avian flu, leaving a gap in information on farms and states where it’s unknown whether there’s an outbreak. “This happened because the farm already identified the outbreak,” she said. “What about farms that aren’t testing?” The USDA said on Wednesday that it would provide more financial and testing support to the dairy industry, including expanded funding for dairy herds not positive for the flu’s circulating H5N1 strain. The assistance includes coverage for veterinary costs associated with virus testing. Is the virus spreading through the respiratory system? Avian flu is known as a respiratory virus in birds, but the farmworker in Michigan tested negative for influenza with a nasal swab — but positive with an eye swab. This suggests the virus was contracted via direct contact in the eye, Nuzzo said. “There’s no evidence of it being a respiratory infection,” she said. CDC Principal Deputy Director Nirav Shah also called the nasal swab results reassuring. “It reduces the likelihood [but does not eliminate] … of a respiratory route of transmission,” he said. WELCOME TO THURSDAY PULSE. We’re almost to the long weekend. Anyone have a good beach read? I just finished “Nothing to See Here” by Kevin Wilson. Send your book recommendations, tips, scoops and feedback to ccirruzzo@politico.com and bleonard@politico.com and follow along @ChelseaCirruzzo and @_BenLeonard_.
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