Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 28, Number 6—June 2022
Research Letter

Expansion of L452R-Positive SARS-CoV-2 Omicron Variant, Northern Lombardy, Italy

Federica Novazzi, Andreina BajComments to Author , Angelo Genoni, Daniele Focosi, and Fabrizio Maggi
Author affiliations: Azienda Socio Sanitaria Territoriale, Sette Laghi, Varese, Italy (F. Novazzi, A. Baj, A. Genoni, F. Maggi); University of Insubria, Varese (F. Novazzi, A. Baj, A. Genoni, F. Maggi); Pisa University Hospital, Pisa, Italy (D. Focosi).

Main Article


Patient demographics and SARS-CoV-2 phylogeny for 25 patients who tested positive for L452R-positve Omicron variant infection, northern Lombardy, Italy*

Patient no. Date Age, y/sex Symptoms NextStrain PANGOlin GISAID accession no.
1 2021 Dec 3 41/F NA 21K BA.1 EPI_ISL_9319568
2 2022 Jan 3 80/M Fever 21K BA.1 EPI_ISL_9306683
3 2022 Jan 3 43/F Chest pain, diarrhea 21K BA.1 EPI_ISL_9306774
4 2022 Jan 3 64/M Fever and dyspnea 21K BA.1 EPI_ISL_9319248
5 2022 Jan 3 52/F NA 21K BA.1 EPI_ISL_9306775
6 2022 Jan 3 55/M Syncope (multiple sclerosis) 21K BA.1 EPI_ISL_9306776
7 2022 Jan 3 65/F NA 21K BA.1 EPI_ISL_9322734
8 2022 Jan 3 48/F Headache 21M None EPI_ISL_9323426
9 2022 Jan 3 31/F NA 21M None EPI_ISL_9319319
10 2022 Jan 3 37/M NA 21K BA.1 EPI_ISL_9319384
11 2022 Jan 3 14/M NA 21K BA.1 EPI_ISL_9323297
12 2022 Jan 3 53/M NA 21K BA.1 EPI_ISL_9323497
13 2022 Jan 3 73/M NA 21M BA.3 EPI_ISL_9324184
14 2022 Jan 3 78/M None 21K BA.1 EPI_ISL_9306777
15 2022 Jan 3 82/F None 21K BA.1 EPI_ISL_9307474
16 2022 Jan 12 70/F Dyspnea 21K BA.1 EPI_ISL_9319456
17 2022 Jan 17 87/M Right pneumonia 21K BA.1 EPI_ISL_9324185
18 2022 Jan 19 92/M NA 21K BA.1 EPI_ISL_9323128
19 2022 Jan 19 2/F NA 21K BA.1.1 EPI_ISL_9309942
20 2022 Jan 19 47/F NA 21K BA.1.1 EPI_ISL_9323348
21 2022 Jan 19 45/M NA 21M BA.1 EPI_ISL_9324374
22 2022 Jan 19 26/M NA 21M None EPI_ISL_9324445
23 2022 Jan 24 23/M Fever (multiple sclerosis) 21K BA.1.1 EPI_ISL_9310402
24 2022 Jan 24 22/F NA 21K BA.1 EPI_ISL_9323222
25 2022 Jan 24 1/F Cough 20B BA.3 EPI_ISL_9324518

*NA, not available.

Main Article

Page created: April 06, 2022
Page updated: May 22, 2022
Page reviewed: May 22, 2022
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.