A Small Surge in Incidence of SARS-CoV-2 Omicron Variant in the “Dynamic Zero” Period
To describe the epidemiological characteristics and transmission dynamics of SARS-CoV-2 Omicron variant during “Dynamic Zero” period, we analyzed data on the 108 laboratory-confirmed SARS-CoV-2 cases during 14 to 30 May 2022 in Beichen district, Tianjin, China. We collected information on demographi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-01-01
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| Series: | Canadian Journal of Infectious Diseases and Medical Microbiology |
| Online Access: | http://dx.doi.org/10.1155/2023/5262117 |
| _version_ | 1826831401588097024 |
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| author | Xiaona Li Ruili Li Qiguo Lian Yang Wang Wenkui Gu Qinghe Meng |
| author_facet | Xiaona Li Ruili Li Qiguo Lian Yang Wang Wenkui Gu Qinghe Meng |
| author_sort | Xiaona Li |
| collection | DOAJ |
| description | To describe the epidemiological characteristics and transmission dynamics of SARS-CoV-2 Omicron variant during “Dynamic Zero” period, we analyzed data on the 108 laboratory-confirmed SARS-CoV-2 cases during 14 to 30 May 2022 in Beichen district, Tianjin, China. We collected information on demographic characteristics, exposure history, and illness timelines of the 108 cases. We described characteristics of the patients and estimated the key epidemiological parameters, including serial interval and the time-dependent reproduction number of the Omicron variant, Rt. Among the 108 laboratory-confirmed patients, the median age was 38 years old, and 50.9% were females. Obvious symptoms were observed among 67.6% (73/108) of all cases, and major clinical manifestations included fever, sore throat, and cough, which occurred in 31.5%, 26.9%, and 19.4% of the 108 cases, respectively. The mean and standard deviation of the SI were estimated as 2.89 and 0.95 days, the Rt varied from 1.24 to 0.27 for a 7-day timelapse. The low reproduction number and the Omicron outbreak being suppressed within a short time marked the effectiveness of the implemented public health measures, such as nucleic acid screening, social distancing, masking, vaccination, medical treatment of patients, and isolation of close contacts. These measures play an important role in fulfilling the goal of controlling the spread of the disease. |
| first_indexed | 2024-04-09T23:32:30Z |
| format | Article |
| id | doaj.art-06180c6a462847d582f59f53810be969 |
| institution | Directory Open Access Journal |
| issn | 1918-1493 |
| language | English |
| last_indexed | 2025-02-16T09:59:37Z |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Canadian Journal of Infectious Diseases and Medical Microbiology |
| spelling | doaj.art-06180c6a462847d582f59f53810be9692025-02-03T01:30:44ZengWileyCanadian Journal of Infectious Diseases and Medical Microbiology1918-14932023-01-01202310.1155/2023/5262117A Small Surge in Incidence of SARS-CoV-2 Omicron Variant in the “Dynamic Zero” PeriodXiaona Li0Ruili Li1Qiguo Lian2Yang Wang3Wenkui Gu4Qinghe Meng5Beichen District Center for Disease Control and PreventionChildren Health and Development DepartmentNHC Key Lab. of Reproduction Regulation (Shanghai Institute for Biomedical and Pharmaceutical Technologies)Beichen District Center for Disease Control and PreventionBeichen District Center for Disease Control and PreventionBeichen District Center for Disease Control and PreventionTo describe the epidemiological characteristics and transmission dynamics of SARS-CoV-2 Omicron variant during “Dynamic Zero” period, we analyzed data on the 108 laboratory-confirmed SARS-CoV-2 cases during 14 to 30 May 2022 in Beichen district, Tianjin, China. We collected information on demographic characteristics, exposure history, and illness timelines of the 108 cases. We described characteristics of the patients and estimated the key epidemiological parameters, including serial interval and the time-dependent reproduction number of the Omicron variant, Rt. Among the 108 laboratory-confirmed patients, the median age was 38 years old, and 50.9% were females. Obvious symptoms were observed among 67.6% (73/108) of all cases, and major clinical manifestations included fever, sore throat, and cough, which occurred in 31.5%, 26.9%, and 19.4% of the 108 cases, respectively. The mean and standard deviation of the SI were estimated as 2.89 and 0.95 days, the Rt varied from 1.24 to 0.27 for a 7-day timelapse. The low reproduction number and the Omicron outbreak being suppressed within a short time marked the effectiveness of the implemented public health measures, such as nucleic acid screening, social distancing, masking, vaccination, medical treatment of patients, and isolation of close contacts. These measures play an important role in fulfilling the goal of controlling the spread of the disease.http://dx.doi.org/10.1155/2023/5262117 |
| spellingShingle | Xiaona Li Ruili Li Qiguo Lian Yang Wang Wenkui Gu Qinghe Meng A Small Surge in Incidence of SARS-CoV-2 Omicron Variant in the “Dynamic Zero” Period Canadian Journal of Infectious Diseases and Medical Microbiology |
| title | A Small Surge in Incidence of SARS-CoV-2 Omicron Variant in the “Dynamic Zero” Period |
| title_full | A Small Surge in Incidence of SARS-CoV-2 Omicron Variant in the “Dynamic Zero” Period |
| title_fullStr | A Small Surge in Incidence of SARS-CoV-2 Omicron Variant in the “Dynamic Zero” Period |
| title_full_unstemmed | A Small Surge in Incidence of SARS-CoV-2 Omicron Variant in the “Dynamic Zero” Period |
| title_short | A Small Surge in Incidence of SARS-CoV-2 Omicron Variant in the “Dynamic Zero” Period |
| title_sort | small surge in incidence of sars cov 2 omicron variant in the dynamic zero period |
| url | http://dx.doi.org/10.1155/2023/5262117 |
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