4.8 Article

Modelling the medium-term dynamics of SARS-CoV-2 transmission in England in the Omicron era

Journal

NATURE COMMUNICATIONS
Volume 13, Issue 1, Pages -

Publisher

NATURE PORTFOLIO
DOI: 10.1038/s41467-022-32404-y

Keywords

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Funding

  1. European Union [101003688]
  2. UK Medical Research Council [MC_PC_19065]
  3. National Institute for Health and Care Research (NIHR) [PR-OD-1017-20002, NIHR200929, NIHR200908]

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This mathematical modelling study predicts the dynamics of SARS-CoV-2 in England until the end of 2022, assuming the dominant presence of the Omikron BA.2 sublineage. The study shows that booster vaccinations are highly effective in mitigating severe outcomes and that the future dynamics will depend on assumptions about waning immunity.
This mathematical modelling study projects the dynamics of SARS-CoV-2 in England until the end of 2022 assuming that the Omicron BA.2 sublineage remains dominant. They show that booster vaccination was highly effective in mitigating severe outcomes and that future dynamics will depend greatly on assumptions about waning immunity. England has experienced a heavy burden of COVID-19, with multiple waves of SARS-CoV-2 transmission since early 2020 and high infection levels following the emergence and spread of Omicron variants since late 2021. In response to rising Omicron cases, booster vaccinations were accelerated and offered to all adults in England. Using a model fitted to more than 2 years of epidemiological data, we project potential dynamics of SARS-CoV-2 infections, hospital admissions and deaths in England to December 2022. We consider key uncertainties including future behavioural change and waning immunity and assess the effectiveness of booster vaccinations in mitigating SARS-CoV-2 disease burden between October 2021 and December 2022. If no new variants emerge, SARS-CoV-2 transmission is expected to decline, with low levels remaining in the coming months. The extent to which projected SARS-CoV-2 transmission resurges later in 2022 depends largely on assumptions around waning immunity and to some extent, behaviour, and seasonality.

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