Covid-19 has now killed as many Americans as the 1918-19 flu pandemic

More than 1,900 people are dying in the US daily on average - the highest level since early March

Covid-19 has now killed as many Americans as the 1918-19 flu pandemic - more than 675,000.

The US population a century ago was just one-third of what it is today, meaning the flu cut a much bigger, more lethal swath through the country. But the Covid-19 crisis is by any measure a colossal tragedy in its own right, especially given the incredible advances in scientific knowledge since then and the failure to take maximum advantage of the vaccines available this time.