On Monday, the Chinese government confirmed that the disease can be transmitted from person to person, although it’s not yet known how it’s spread. Fever along with symptoms that mirror pneumonia and other lower-respiratory diseases may all point to 2019-nCOV—but they may also just point to a flu. Given that it’s flu season, that makes infected people hard to spot. In many of the infected, the disease is minor and may be diagnosed. “While severe illness, including illness resulting in a number of deaths, has been reported in China, other patients have had milder illness and been discharged,” the CDC reports.