Articles by Alex Welte

Covid-19: How South Africa differs from the rest of the continent

Deaths have been massively underestimated in Africa

Science | 19 January 2022

If we do lock down, we must time it properly for it to be effective

Science | 26 November 2021

Here’s how deaths have changed over the past two decades

Science | 8 October 2021

The time for social distancing is right now

Opinion | 10 June 2021

Interrupting a programme early leads to many more infections than one might naively estimate

Science | 21 April 2021

Starting a lockdown too early or too late reduces the benefits but not the hardships

Science | 31 March 2021

It is much more sensible to compare how many people have tested positive this week to last week

Science | 20 August 2020

The answer may surprise you

Analysis | 18 August 2020

With great overview, comes great responsibility

Opinion | 14 April 2020

The epidemic won’t disappear by 17 April. We have merely bought three weeks breathing space to plan for the future

Opinion | 31 March 2020

And the crux of the solution is that a hundred thousand journals need to die

Opinion | 3 August 2017