This transmission electron microscope image shows SARS-CoV-2, the virus that causes COVID-19, isolated from a patient in the U.S. Virus particles are shown emerging from the surface of cells cultured in the lab. The spikes on the outer edge of the virus particles give coronaviruses their name, crown-like. (Courtesy National Institute of Allergy and Infectious Diseases)

A second case of COVID-19 has been confirmed on Prince of Wales Island. Officials in the city of Craig Monday confirmed there are now at least two people testing positive for coronavirus in the community. An investigation into the cause of the infection is underway. No further information about the individual was released.

The first COVID-19 case on the island was announced Friday. State public health officials said the woman is in her 70s.

Authorities in Craig continue to recommend that residents wear face masks when leaving the house for essential needs. Anyone with flu-like symptoms should self-isolate and call their doctor, the statement said.

As of Sunday, state health officials say coronavirus has infected at least 272 Alaskans. There have been eight fatalities attributed to the disease.