We don't have exact numbers because nobody's publishing them. But, from reports on these forums, the case spread seems to be way higher now than it was back then. The variant of Covid-19 wasn't that different, though. In the fall and winter, when PCR testing at the port was required, Omicron was the dominant variant and we had that massive wave of cases.I'd be interested to know the actual percentage though. Sheer numbers don't matter when the actual people sailing was quite less and in addition the variant was quite different back then compared to now.
I understand the downsides of testing at the port, though. I'm not here to argue about it and get us all in trouble again!