Four new cases of COVID-19 were reported in Douglas County on Tuesday, the health department there said.

The four cases bring the total in Douglas County to 38.

The latest individuals include a woman in her 30s and three men ranging from their 40s to their 70s. One of them has been hospitalized.

One of the four cases is from “community spread” the health department said in the announcement. Extra precautions to avoid a COVID-19 infection need to be taken throughout the Omaha community.

The U.S. Center for Disease Control has said that 4 out of 5 people who have become ill acquired the disease from someone who didn’t know they had it, which means there are likely more people in the Omaha community who are infected with COVID-19 than have been reported.

Many people with the virus have mild symptoms or no symptoms at all, said Dr. Adi Pour, the director of the Douglas County Health Department.

COVID-19 symptoms include a fever, cough, sore throat, or difficulty breathing.

Some people have experienced a loss of their sense of taste or smell, the health department said.

If you have COVID-19 symptoms, or develop symptoms, contact your health care provider and tell them how you are feeling, plus any possible history of exposure.

Please call ahead before you go to the doctor’s office or an emergency room.

The Nebraska Department of Health and Human Services has a COVID-19 information line from 8 a.m.-8 p.m. daily at (402) 552-6645.