The arrival date is part of the paper that came out of the Oxford research group yesterday. Using the death rates they work backwards to claim that there were uncounted cases before to account for the actual relationship between fist identified cases and deaths. This report was just brought up during the daily briefing and it was not dismissed, but instead got the "We just don't know - and this is why testing is so important!" answer. Which is entirely fair. But I bring it up because it means even the experts are not willing to make a claim with regard to how long it has been here.
The arrival date is part of the paper that came out of the Oxford research group yesterday. Using the death rates they work backwards to claim that there were uncounted cases before to account for the actual relationship between fist identified cases and deaths. This report was just brought up during the daily briefing and it was not dismissed, but instead got the "We just don't know - and this is why testing is so important!" answer. Which is entirely fair. But I bring it up because it means even the experts are not willing to make a claim with regard to how long it has been here.