Resources with keywords: Clade 1b
Mpox: recombinant virus with genomic elements of clades Ib and IIb - Global
WHO
14 February 2026
Recombination of monkeypox virus (MPXV) strains has been documented in recent months, with two cases of a recombinant strain comprising clade Ib and IIb MPXV reported. Based on available information, the overall WHO public health risk assessment for mpox remains unchanged.
First Clade Ib Monkeypox Virus Infection Reported in the Americas — California, November 2024
CDC / MMWR
13 February 2025
Levy V, Branzuela A, Hsieh K, et al.
The first reported clade Ib MPXV infection in the Americas was identified via electronic laboratory reporting in California in a U.S. traveler who returned from East Africa.
