The emergence of highly pathogenic avian influenza (HPAI) H5N1 clade 2.3.4.4b viruses and their transmission to dairy cattle and animals, including humans, poses a major global public health threat.

Health officials in San Francisco say the city now has its first case of a newer, potentially more severe mpox strain. This variant of mpox — the disease formerly called monkeypox — is known as clade ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A new and possibly deadlier strain of mpox is spreading rapidly across ...

A clade, derived from ancient Greek, is a group of organisms that are derived from a common ancestor and its lineal descendants. A clade is also subtypes, genotypes, or groups that all arise from a ...

Health officials confirmed this weekend that the first U.S. case of a new mpox strain had been detected in the Bay Area. This variant of mpox — formerly called monkeypox — is known as clade I and has ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A reportedly deadlier strain of mpox has been recorded in the U.S. for ...

Mpox virus (MPXV) clade Ib emerged in South Kivu in the Democratic Republic of Congo in 2023. 1 The emergence of clade Ib is characterized by rapid eastward spread from the Democratic Republic of ...