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Outbreak Updates
12 January 2026
Tanzania + Mwanza

CVDPV2 in Tanzania

As of 7 January 2026, two circulating vaccine-derived poliovirus type 2 (cVDPV2) positive environmental samples were reported from specimens collected on 16 December 2025 in Mwanza. Please see our Topics in Brief article for further details on polio.

Source: GPEI Polio in brief
Take usual precautions

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Polio Pregnancy Yellow fever Malaria Vaccine / Vaccination Rabies Dengue Marburg Mpox Nipah virus Oropouche MERS-CoV Pertussis

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Polio Pregnancy Yellow fever Malaria Vaccine / Vaccination Rabies Dengue Marburg Mpox Nipah virus Oropouche MERS-CoV Pertussis