As concerns mount about the coronavirus in multiple states, NBC medical correspondent Dr. John Torres joins TODAY to explain what you need to know. He says that while “you’re probably going to see a few more cases pop up” in the U.S., the virus may drop off quickly as SARS did. He also says that China is doing an excellent job taking precautions. Editor’s note: The headline for this story from January has been changed because it inaccurately referred to the coronavirus as “the Chinese coronavirus.”