Des Moines – Five more Iowa residents have tested positive for new coronavirus, including a restaurant worker in Council Bluffs, officials announced Monday.

Besides the Council Bluff case, all of the other people infected are from Johnson County in eastern Iowa and all were on an Egyptian cruise, according to the Iowa Department of Public Health. The new cases bring the total number of infections to eight.

On Sunday, officials announced Iowa's first COVID-19 cases, as three individuals from Johnson County who had been on the cruise tested positive for the virus.

For most people, the new coronavirus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia.

The vast majority of people recover from the new virus. According to the World Health Organization, people with mild illness recover in about two weeks, while those with more severe illness may take three to six weeks to recover. In mainland China, where the virus first exploded, more than 80,000 people have been diagnosed and more than 58,000 have so far recovered.”

The restaurant worker who tested positive worked at a Panera Bread in Council Bluffs, Matt Wyant, the Pottawattamie County planning director, said at a news conference. The business closed over the weekend to undergo a deep cleaning and hadn't reopened as of Monday.

Wyant said the woman, who had recently traveled from California, was recovering at her home. She is between 41 and 60 years old and has some under-lying health conditions, Wyant said.

All of the other infected people are between 61 and 80 years old. All of those who tested positive are recovering at their homes and are in isolation.

On Monday, Gov. Kim Reynolds signed a disaster emergency proclamation that enables the activation of disaster response and recovery tools at the Iowa Department of Homeland Security and Emergency Management.