From the NYC NBC affiliate WNBC:
Number of People Under "Active Monitoring" for Ebola in NYC Triples, City Officials Say
The number of people under "active monitoring" for Ebola symptoms has increased from 117 on Monday to 357 people Wednesday, health officials said.
The vast majority of those being monitored arrived in New York City within the past 21 days from the three Ebola-affected countries, the New York City Health and Hospitals Corporation said in a statement.
Do not forget that this administration is still allowing about 100 to 150 people per day entry into the US from the infected areas. Those 357 people are just the ones they know about.