In a city with 1,000,000 (one million) people, 37,000 people would die from the virus. The 37,000 people would require medical treatment, including mechanical ventalation. I could not imagine what would happen if this hit a city with 22-23 million people.
It seems to me that the WHO, CDC, and any other group willing to work on the problem to help prevent a health catastrophe should do so immediately.