What our model seems to indicate is that the first introduction of the virus in New York was around early January and more generally, what we see is that by the end of February, most of the states have been seeded and have local transmission. Matteo Chinazzi More Quotes by Matteo Chinazzi More Quotes From Matteo Chinazzi The initial introduction of the virus in the U.S. coincided with the peak of theflu season, so the symptoms you had, it would be difficult to untangle with flu. Matteo Chinazzi