Why is it that while Covid-19 cases are rising, deaths continue to fall?

There is speculation that the age of those infected is playing a part, while social distancing is also having an impact

The government’s Covid-19 dashboard shows cases have risen steadily from their lowest point on 1 July when the rolling seven-day average was down to 574. By 30 August it had more than doubled, to 1,402 a day. Yet the death rate has declined steadily over the same period: from a rolling average of 37.4 per day to 4.6 per day. No one is sure why. But here are some explanations researchers are examining:

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