The first U.S. cases were found to have come here via Europe, but we ended up with plenty of cross pollination directly from China via travelers and contaminate

The first U.S. cases were found to have come here via Europe, but we ended up with plenty of cross pollination directly from China via travelers and contaminated goods (the first cases in North Carolina for instance involved people who had packages of things from China they purchased on Amazon, these people had no contact with travelers).