Tag Archives: COVID-19

Two different pandemics: the USA and Europe

Posted on June 24, 2020 by

The trajectories of COVID-19 have been dramatically different in the USA and Europe. Currently there are close to 30,000 new cases per day in the USA, compared with around 3,000 per day in the European Union (and around 20 per … Continue reading →

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Imperial study estimates 3.1 million deaths averted by the lockdown in Europe

Posted on June 10, 2020 by

I’ve stopped doing my own graphs to check trends for coronavirus. The 91-divoc.com website has added daily cases and daily deaths time series as well as moving 7-day average time trends to its visualizations, and has plots for countries for … Continue reading →

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Machine learning projection model for Covid-19

Posted on May 31, 2020 by

Youyang Gu, an independent data scientist, has created a statistical projection model for Covid-19 (https://covid19-projections.com/) that uses machine learning techniques to fit a classical SEIR infectious disease model to the data for daily confirmed cases and deaths, taking into account … Continue reading →

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Country progress to 9 May in controlling COVID-19 epidemics

Posted on May 10, 2020 by

I downloaded the latest COVID-19 data for reported deaths and confirmed cases from Johns Hopkins this morning to see whether the data supports the relaxation of social isolation that is starting to happen in many countries. The USA now has … Continue reading →

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COVID-19 projections and reality

Posted on May 6, 2020 by

On 27th April, I posted some short-run projections of COVID-19 cases and deaths. The plots below show how the daily new cases per million population and deaths per million population compare with reality (at least the confirmed case rates and … Continue reading →

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COVID-19 short-run projections

Posted on April 27, 2020 by

Purely statistical predictions of future trends in COVID-19 deaths or cases, even including predictive covariates, have been unable to make sensible forecasts that are not highly sensitive to slight additions of data. The only useful models have been the more … Continue reading →

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Critics agree that IHME COVID-19 projection model is flawed

Posted on April 18, 2020 by

I downloaded the latest IHME update of its COVID-19 projections yesterday to do another evaluation. Their projections still look very problematic. Other disease modellers and epidemiologists are coming to the same conclusion. An article just published in Statnews was much … Continue reading →

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How useful are IHME projections of the coronavirus pandemic?

Posted on April 14, 2020 by

The Institute for Health Metrics and Evaluation (IHME), based at the University of Washington in Seattle, caused considerable alarm on 7 April when it released projections of Covid-19 deaths which predicted total deaths for the UK would be the highest … Continue reading →

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How does population age structure affect overall case fatality ratios for COVID-19?

Posted on April 1, 2020 by

The first graph shows coronavirus deaths in Italy up to 26 March 2020 by sex and age. The overall case fatality rate for lab confirmed cases is 11.1% and 70% of deaths are male (closer to 80% below age 80, … Continue reading →

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COVID-19 growth rates by country

Posted on March 26, 2020 by

Nice new site http://91-divoc.com/pages/covid-visualization/ that plots time trends in cases and deaths, total numbers and rates per million population. The time axis is days since 100+ cases/deaths or days since 1 case/death per million population. I’ve attached screenshots of cases/million … Continue reading →

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