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CDC says clade I mpox is likely now spreading inside the US, with local cases in 15 jurisdictions
The CDC counts nearly 130 clade I mpox cases in at least 26 states and says local spread in 15 jurisdictions points to sustained transmission. A California county just reported cases with no travel abroad. Here is the risk, the symptoms and who should get vaccinated.
October 31, 2026 · 3 min read