Without a vaccine, the cost of reaching herd immunity during a pandemic is counted in lives lost, and it won't quickly stop the virus's spread.
June 16, 2020 • ~7 min
Tags: mathematics health covid-19 coronavirus death pandemic statistics vaccines herd-immunity
The equation 'COVID alert level = R (rate of infection) + number of infections' simply does not add up to a number between one and five.
May 15, 2020 • ~6 min
Tags: mathematics covid-19 coronavirus-2020 lockdown lockdown-exit-strategy
Testing everyone for COVID-19 isn't realistic in a country the size of the US, but there are ways to design testing systems that can catch most of the cases.
April 21, 2020 • ~7 min
Tags: mathematics health medicine covid-19 coronavirus coronavirus-2020 covid-19-testing pharmacy mathematical-models data-analytics
Here's one way to test more people for coronavirus with fewer resources.
April 9, 2020 • ~6 min
Tags: mathematics coronavirus coronavirus-testing
The awesome power of exponential growth explained.
April 3, 2020 • ~7 min
Tags: mathematics infectious-diseases covid-19 coronavirus disease-transmission exponential
Exponential growth, such as in a viral epidemic, starts deceptively slowly, then quickly balloons. A mathematician explains the importance of early action and the costs of delay.
April 2, 2020 • ~5 min
Tags: mathematics coronavirus coronavirus-2020 viruses quick-reads outbreaks exponential
You don't have to believe the official figures to realise that the rate of spread of the virus in Japan has been slower than in other countries.
March 26, 2020 • ~5 min
Tags: mathematics covid-19 new-coronavirus japan
NASA scientist Katherine Johnson was instrumental in getting people to the moon. Here are some of the lessons one mathematics professor believes she taught us all.
Feb. 26, 2020 • ~7 min
Tags: mathematics space feminism nasa science space-shuttle apollo-11 moon-landing race racism civil-rights segregation scientist hidden-figures katherine-johnson
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