Changing patterns of SARS-CoV-2 infection through Delta and Omicron waves by vaccination status, previous infection and neighbourhood deprivation: a cohort analysis of 2.7 M people.
BMC Infect Dis
; 22(1): 889, 2022 Nov 26.
Статья
в английский
| MEDLINE | ID: covidwho-2139179
ABSTRACT
BACKGROUND:
Our study examines if SARS-CoV-2 infections varied by vaccination status, if an individual had previously tested positive and by neighbourhood socioeconomic deprivation across the Delta and Omicron epidemic waves of SARS-CoV-2.METHODS:
Population cohort study using electronic health records for 2.7 M residents in Cheshire and Merseyside, England (3rd June 2021 to 1st March 2022). Our outcome variable was registered positive test for SARS-CoV-2. Explanatory variables were vaccination status, previous registered positive test and neighbourhood socioeconomic deprivation. Cox regression models were used to analyse associations.RESULTS:
Originally higher SARS-CoV-2 rates in the most socioeconomically deprived neighbourhoods changed to being higher in the least deprived neighbourhoods from the 1st September 2021, and were inconsistent during the Omicron wave. Individuals who were fully vaccinated (two doses) were associated with fewer registered positive tests (e.g., individuals engaged in testing between 1st September and 27th November 2021-Hazards Ratio (HR) = 0.48, 95% Confidence Intervals (CIs) = 0.47-0.50. Individuals with a previous registered positive test were also less likely to have a registered positive test (e.g., individuals engaged in testing between 1st September and 27th November 2021-HR = 0.16, 95% CIs = 0.15-0.18. However, the Omicron period saw smaller effect sizes for both vaccination status and previous registered positive test.CONCLUSIONS:
Changing patterns of SARS-CoV-2 infections during the Delta and Omicron waves reveals a dynamic pandemic that continues to affect diverse communities in sometimes unexpected ways.ключевые слова
Полный текст:
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Коллекция:
Международные базы данных
база данных:
MEDLINE
Основная тема:
COVID-19
Тип исследования:
Когортное исследование
/
Наблюдательное исследование
/
Прогностическое исследование
Темы:
Вакцина
/
Варианты
Пределы темы:
Люди
Язык:
английский
Журнал:
BMC Infect Dis
Тематика журнала:
Инфекционные болезни
Год:
2022
Тип:
Статья
Аффилированная страна:
S12879-022-07878-2
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