Generation and transmission of interlineage recombinants in the SARS-CoV-2 pandemic.
Cell
; 184(20): 5179-5188.e8, 2021 09 30.
Article
in En
| MEDLINE
| ID: mdl-34499854
We present evidence for multiple independent origins of recombinant SARS-CoV-2 viruses sampled from late 2020 and early 2021 in the United Kingdom. Their genomes carry single-nucleotide polymorphisms and deletions that are characteristic of the B.1.1.7 variant of concern but lack the full complement of lineage-defining mutations. Instead, the remainder of their genomes share contiguous genetic variation with non-B.1.1.7 viruses circulating in the same geographic area at the same time as the recombinants. In four instances, there was evidence for onward transmission of a recombinant-origin virus, including one transmission cluster of 45 sequenced cases over the course of 2 months. The inferred genomic locations of recombination breakpoints suggest that every community-transmitted recombinant virus inherited its spike region from a B.1.1.7 parental virus, consistent with a transmission advantage for B.1.1.7's set of mutations.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Recombination, Genetic
/
Pandemics
/
SARS-CoV-2
/
COVID-19
Limits:
Humans
Country/Region as subject:
Europa
Language:
En
Journal:
Cell
Year:
2021
Type:
Article