Prepared by Professor Alan Whiteside, OBE, Chair of Global Health Policy, BSIA, Waterloo, Canada & Professor Emeritus, University of KwaZulu-Natal – www.alan-whiteside.com
On Tuesday, the global death toll attributed to the coronavirus topped one million people. The largest share, by an order of magnitude, was reported from the USA. This bleak milestone has been extensively covered by the worlds’ media. However, in terms of the daily number of confirmed cases there seems to be a plateau, or at the very least, the numbers are not rising as rapidly. To put Covid-19 into perspective, in 2017 there were 620,000 deaths from malaria, 794,000 from suicide and 954,000 from HIV and AIDS.1 This is the greatest death toll from a pandemic for centuries.
In this blog I want to turn to, and revisit, some fundamental issues:
- How many coronavirus cases have there been?
- How many of the cases matter and how much?
- What does excess mortality look like?
- One major concern has been the link between HIV and Covid-19. It seems there is some clarity on this – and good news, as discussed in a special section.
- Finally, in the conclusion, I ask what is the impact of the virus?
The reason for this revisit is because of the way data are portrayed. Each evening in the UK we are informed by newsreaders of the number of new cases and the number of deaths. One graph shows the new cases recorded since the epidemic began. At first sight is deeply concerning, there are far more new cases reported at present than there were in April at the height of the pandemic. On the 25th September there were 6,878 new cases, well above the previous peak of 5,505 on the 22nd April. It should be noted this is data for the United Kingdom, it can be disaggregated for the four nations: England, Scotland, Wales and Northern Ireland.
This pattern is seen in several other European countries. How concerned should we be? There is a sense of real worry because the northern hemisphere is entering the winter, and no one is quite sure what this means. Normally there will be many respiratory illnesses and indeed with schools having reopened and students returned to university, (where many students are now, unbelievably, locked in)2 there is a sense that there will be an inevitable increase in cases. At the same time, the number of deaths and hospitalisations has fallen dramatically and may well remain low.