He also states that China allowed 20,000 infected people to invade our country. According to this letter writer there would have been more if President Trump hadn’t issued a ban. But banning flights from China did nothing to stop anyone with the infection from entering the country via Europe. That is how New York became the epicenter for this disease. The data suggests that early on, many of the patients at the epicenter of the outbreak in Wuhan, Hubei Province, China had some link to a large seafood and live animal market, suggesting animal-to-person spread.