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- W3048971161 abstract "Abstract Aims To generate a predictive model for the SARS-COV-2 viral reproductive rate, based on government policy and weather parameters. Methods A multivariate model for the log 10 of viral reproductive rate was constructed for each country using lockdown stringency (Oxford University tracker), temperature and humidity, for the 1 st 110 days of 2020. This was validated by extrapolating to the following 51 days, and comparing the predicted viral rate and cumulative mortality with WHO data. The country models was extrapolated to July 2021 using projected weather forecast for four scenarios; continuing with the 11/6/2020 lockdown policy, 100% lockdown, 20% lockdown and no lockdown. Results From pooled data (40 countries), lockdown stringency had a strong negative correlation with log 10 viral reproductive rate (−0.648 at 21 days later). Maximum temperature correlated at -0.14, 14 days later and humidity correlated at +0.25, 22 days later. Predictive Models were generated for 11 countries using multivariate regression of these parameters. The R 2 correlation for log 10 R 0 ranged from 0.817 to 0.987 for the model generation period. For the validation period, the Pearson’s coefficient of correlation ranged from 0.344 to 0.984 for log 10 R 0 and from 0.980 to 1.000 for cumulative mortality. Forward extrapolation of these models for 5 nations, demonstrate, that removing the lockdown will result in rapid spread of the disease ranging from as soon as July 2020 for Russia, UK, Italy and India to January 2021 for the USA. The current (11/6/20) lockdown in the USA, Spain, UK, France, Germany, Turkey can control the disease but other nations will need to intensify their lockdowns to prevent future resurgence. Most nations will require more stringent lockdowns in January than in July. Conclusion The viral reproductive rate is highly predicted by a combination of lockdown stringency, temperature and humidity. Country specific predictive models can provide useful forecast of policy requirements." @default.
- W3048971161 created "2020-08-18" @default.
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- W3048971161 date "2020-08-13" @default.
- W3048971161 modified "2023-09-30" @default.
- W3048971161 title "Predicting the future SARS-COV-2 reproductive rate" @default.
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- W3048971161 doi "https://doi.org/10.1101/2020.08.09.20170845" @default.
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