3 ms·
If you assume that only 400 other people in all of the USA have been travelling beyond its borders and/or in contact with such travellers, then it's ok to assum
by thombat 7y ago
If you assume that only 400 other people in all of the USA have been travelling beyond its borders and/or in contact with such travellers, then it's ok to assume that all potentially infected have been tested.
- makomk 7y agoThe US placed tight restrictions on people who'd recently visited China entering the country. Other countries did not. Testing regimes elsewhere have been focused on visitors from China and people who've been in direct contact with them.