An employee of the Department of General Services Division of Consolidated Laboratories' Virginia Public Health Labratory adds chemicals in the second step of testing a sample for the Coronavirus at the lab in Richmond, Virginia. on Wednesday, March 4. Joe Mahoney/Richmond Times-Dispatch via AP

There are 158 cases of the novel coronavirus in the United States, according to the US Centers for Disease Control and Prevention, as well as state and local governments.

According to the CDC, there are 49 cases from repatriated citizens. According to CNN Health’s tally of US cases that are detected and tested in the United States through US public health systems, there are 109 cases in 14 states.

This brings the total number of coronavirus cases in the US to 158.

This includes presumptive positive cases that tested positive in a public health lab and are pending confirmation from the CDC, and confirmed cases have received positive results from the CDC.

Here is how a virus spreads: