The rapidly growing JN.1 coronavirus subvariant is now responsible for approximately one-third of new COVID-19 infections in the Northeast U.S., compared to about 20% of new infections across the country as a whole. While the public health risk remains low, studies from Columbia University and in China suggest the subvariant is escaping many people’s immunity and could lead to another wave of infections, reports CNN. The Centers for Disease Control reports that JN.1 has already more than doubled in prevalence in the U.S. between late November and mid-December, and variant trackers say it’ll on…