Volume 31, Supplement—May 2025
SUPPLEMENT ISSUE
Supplement
Large-Scale Genomic Analysis of SARS-CoV-2 Omicron BA.5 Emergence, United States
Figure 4

Figure 4. Time-scaled phylogeographic analysis of SARS-CoV-2 Omicron BA.5 sequences in the United States during January–June 2022. Analysis of BA.5 emergence was conducted by using 18,529 sequences collected globally and in the United States. Purple dotted line indicates the inferred date of the first introduction. The blue dotted line indicates the first sample of BA.5 sequenced in the United States. Colors indicate origin of the BA.5 variant.
1Current affiliation: Program for Appropriate Technology in Health (PATH) Southeast Asia, and Hanoi Medical University, Hanoi, Vietnam.
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