Ann Clin Microbiol 2023;26:83-86. SARS-CoV2 mutation detection experience using PowerChek SARS-CoV-2 S-gene Mutation Detection Kit
Table 1. The variant types of real-time PCR observed during this study period (2021.01-2022.03)
Variant Predominance period by variant type No. of samples (%)
Pre-delta (2020.1.20–2021.7.24) Delta (2021.7.25-2022.1.15) Omicron BA.1/BA.2 (2022.1.16-2022.7.23)
SARS-CoV-2 20 1 021 (5.3)
Alpha 5 005 (1.3)
Delta 6 204 11 221 (55.5)
Omicron.BA.1 1 22 023 (5.8)
Omicron.BA.2 81 081 (20.4)
Inconclusive 21 19 5 045 (11.3)
Not detected 2 002 (0.5)

Abbreviation: PCR, polymerase chain reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.