Molecular SARS-CoV-2 surveillance in Bavaria shows no Omicron transmission before the end of November 2021.
Infection
; 50(3): 761-766, 2022 Jun.
Article
in English
| MEDLINE | ID: covidwho-1712370
ABSTRACT
BACKGROUND:
Five SARS-CoV-2 variants are currently considered as variants of concern (VOC). Omicron was declared a VOC at the end of November 2021. Based on different diagnostic methods, the occurrence of Omicron was reported by 52 countries worldwide on December 7 2021. First notified by South Africa with alarming reports on increasing infection rates, this new variant was soon suspected to replace the currently pre-dominating Delta variant leading to further infection waves worldwide.METHODS:
Using VOC PCR screening and Next Generation Sequencing (NGS) analysis of selected samples, we investigated the circulation of Omicron in the German federal state Bavaria. For this, we analyzed SARS-CoV-2 surveillance data from our laboratory generated from calendar week (CW) 01 to 49/2021.RESULTS:
So far, we have detected 69 Omicron cases in our laboratory from CW 47-49/2021 using RT-qPCR followed by melting curve analysis. The first 16 cases were analyzed by NGS and all were confirmed as Omicron.CONCLUSION:
Our data strongly support no circulation of the new Omicron variant before CW 47/2021.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
SARS-CoV-2
/
COVID-19
Type of study:
Diagnostic study
/
Observational study
Topics:
Variants
Limits:
Humans
Language:
English
Journal:
Infection
Year:
2022
Document Type:
Article
Affiliation country:
S15010-022-01767-1
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