tetano
Editor, Senior Moderator
Emerg Infect Dis
. 2022 Apr 13;28(6).
doi: 10.3201/eid2806.220210. Online ahead of print.
Expansion of L452R-Positive SARS-CoV-2 Omicron Variant, Northern Lombardy, Italy
Federica Novazzi, Andreina Baj, Angelo Genoni, Daniele Focosi, Fabrizio Maggi
Abstract
We report 25 cases of infection with SARS-CoV-2 Omicron variant containing spike protein L452R mutation in northern Lombardy, Italy. Prevalence of this variant was >30% in this region, compared with <0.5% worldwide. Many laboratories are using previously developed L452R-specific PCRs to discriminate Omicron from Delta mutations, but these tests may be unreliable.
Keywords: COVID-19; Italy; SARS-CoV-2; SARS-CoV-2 Omicron variant; coronavirus disease; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.
. 2022 Apr 13;28(6).
doi: 10.3201/eid2806.220210. Online ahead of print.
Expansion of L452R-Positive SARS-CoV-2 Omicron Variant, Northern Lombardy, Italy
Federica Novazzi, Andreina Baj, Angelo Genoni, Daniele Focosi, Fabrizio Maggi
- PMID: 35416767
- DOI: 10.3201/eid2806.220210
Abstract
We report 25 cases of infection with SARS-CoV-2 Omicron variant containing spike protein L452R mutation in northern Lombardy, Italy. Prevalence of this variant was >30% in this region, compared with <0.5% worldwide. Many laboratories are using previously developed L452R-specific PCRs to discriminate Omicron from Delta mutations, but these tests may be unreliable.
Keywords: COVID-19; Italy; SARS-CoV-2; SARS-CoV-2 Omicron variant; coronavirus disease; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.