All-time total case numbers from EU countries aren't that meaningful because pretty much all the countries that experienced massive, hospital-overwhelming outbreaks also massively undertested during them compared to the US during its outbreak. I know that in particular Italy and the UK were more or less only testing people who were hospitalized for Covid during the bulk of it. It looks like Spain may have done a little better, which might explain why they reported so many cases compared to others.
Partly this is because of the timing of the outbreaks, and partly it's because the US ramped up testing to an extent that hasn't really been replicated elsewhere. So you'd likely run into similar issues comparing New York case numbers with anywhere else in the country due to their big outbreak being earlier, or with comparing the current surge in cases in Europe with the first one.
Partly this is because of the timing of the outbreaks, and partly it's because the US ramped up testing to an extent that hasn't really been replicated elsewhere. So you'd likely run into similar issues comparing New York case numbers with anywhere else in the country due to their big outbreak being earlier, or with comparing the current surge in cases in Europe with the first one.