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San Francisco public‑health officials say H5N1 risk to general public remains low after one local case
Summary
San Francisco Health Officer Dr. Susan Philip updated the Health Commission on H5N1 avian influenza: as of Feb. 26 the U.S. had 70 confirmed human cases (38 in California), more than 12,000 wild‑bird detections and major impacts to U.S. dairy herds. San Francisco detected one case via enhanced surveillance; no onward transmission was found.
San Francisco’s health officer on March 3 told the Health Commission the city has recorded one human H5N1 avian influenza case but that the risk to the general public remains low.
Dr. Susan Philip said the case was detected through enhanced surveillance in the city’s public‑health laboratory and later confirmed by the Centers for Disease Control and Prevention as genotype B3, a strain linked to recent outbreaks in California dairy cattle. The case was a child in San Francisco with fever and conjunctivitis; symptoms resolved within a week and no secondary infections were found after extensive contact tracing and serology testing.
At a national level, Philip said there were 70 confirmed human…
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