Brazil confirms 832 monkeypox cases in 2026, São Paulo and Rio lead surge

Brazil's Ministry of Health has confirmed 832 monkeypox cases so far in 2026, with São Paulo and Rio de Janeiro accounting for a large share of the increase. The outbreak is ongoing and may signal a seasonal or regional escalation, though case severity and vaccination status remain unclear. This matters as a potential public-health strain in Brazil's largest urban centers ahead of the holiday season.

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