Huomaa: Monitoroidaan (VUM) erästä rekombinanttia omikron- ja delta-alalinjojen kesken.
Variants under monitoring (VUM)
Working definition
A SARS-CoV-2 variant with genetic changes that are suspected to affect virus characteristics with some indication that it may pose a future risk, but evidence of phenotypic or epidemiological impact is currently unclear, requiring enhanced monitoring and repeat assessment pending new evidence.
Note: It is expected that our understanding of the impacts of these variants may fast evolve, and designated Variants under Monitoring may be readily added/removed; therefore, WHO labels will not be assigned at this time. Former VOIs/VOCs may, however, be monitored for an extended period under this category, and will maintain their assigned WHO label until further notice.
Variants under monitoring (VUMs):
| Pango lineage* | GISAID clade | Nextstrain clade | Earliest documented samples | Date of designation |
|---|---|---|---|---|
| B.1.640 | GH/490R | - | Multiple countries, Sep-2021 | 22-Nov-2021 |
| BA.1 x AY.4 recombinant | - | - | France, Jan-2021 | 09-Mar-2022 |
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