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On 10 June 2022, a new nomenclature system for the monkeypox virus (MPXV) clades and lineages was proposed by Happi et al. 1 that defined the Clade 1 (former Congo Basin) and Clades 2 and 3 (both comprising the former West African clade). Our study, published online in Nature Medicine on 24 June 2022, relied on this nomenclature. Later, on 12 August 2022, the World Health Organization, together with a group of global experts, revised and agreed on the new naming convention for MPXV clades in which the previously proposed Clades 1, 2 and 3 are now designated Clades I, IIa and IIb, respectively 2 . The initial proposal by Happi et al. was subsequently updated 1 as well as the final corresponding publication 3 .
Isidro et al. (Wed,) studied this question.
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