The accuracy of COVID-19 death statistics

In summary:

    • Three sets of figures regarding numbers of deaths attributed to COVID-19 are collated which crucially vary in their timeliness. 
    • We now know that COVID-19 was not the cause of death for one in 10 people who had symptoms of the virus mentioned on their death certificate.
    • Conversely, 90% of people whose death certificate mentions COVID-19 were killed by it.

Continue reading The accuracy of COVID-19 death statistics

What is group screening for COVID-19?

Summary 

Group screening takes samples from multiple people, mixes them together, and tests them as one. People within a group that test positive are individually retested, or an algorithm is used to identify positive individuals.

Pros: Fewer tests to process; more people tested; lower cost; detection of asymptomatic cases.

Cons: It is not efficient when the infection rate is high. Continue reading What is group screening for COVID-19?