A visitor who developed symptoms of COVID-19 after arriving on Maui has tested positive for the virus, the second reported case on the island, the state Department of Health reported on Monday afternoon.

The visitor had arrived from the Mainland on March 7 and developed symptoms on March 9, Health Director Dr. Bruce Anderson told The Maui News. They went to an urgent care facility on Wednesday, during which time a sample was taken and submitted for testing.

Because the sample was delivered to a private lab, it had to be sent to the Mainland for testing, which takes three or four days, Anderson said. DOH received presumptive positive results for the visitor on Sunday night. (The results have to be confirmed by the Centers for Disease Control and Prevention, but the Health Department treats these cases as positive.)

“The individual was traveling with a partner who has no symptoms to date,” Anderson said. “They were both sightseeing until they were notified by the provider regarding the positive results, and at that point, they isolated themselves . . . in a hotel room with room services.”

Anderson said that the visitor who tested positive will remain in isolation while the partner is in quarantine. He said that the investigation is still underway, and that the department did not yet have information on where the visitors stayed and what activities they might have done while sick.

“My understanding is that they did not immediately isolate themselves in their room,” Anderson said. “They did as soon as they identified as being positive.”

He added that the department would be working to identify anyone who may have had close contact with the visitors.

The department did not yet have information on where the visitors were from and where on Maui they stayed.

It’s Hawaii’s 10th confirmed case of COVID-19 and Maui’s second, following the report over the weekend of an Air Canada flight attendant who arrived on Maui on March 8 later tested positive for the virus. The woman self-isolated at the Royal Lahaina Resort and avoided all common areas until her test came back positive, and she was moved to isolation at a Lahaina facility.

Results from the private labs that came back Sunday night also included two Oahu residents who tested positive. One was a tour guide at Kualoa Ranch; the other was a health care worker, who traveled to Las Vegas with a partner.

Anderson said that the Kualoa Ranch tour guide developed symptoms on March 9 and was seen at an urgent care facility. On March 11, the tour guide’s symptoms worsened, and the next day they went back to an urgent care facility and were swabbed for COVID-19.

The person was advised to separate as much as possible from other family members, who are all in quarantine now, Anderson said. Three family members who are showing symptoms are being tested.

Media reports have described the Kualoa Ranch employee as Hawaii’s first community-transmitted case, since the person did not have a history of out-of-state travel. Honolulu Mayor Kirk Caldwell said that “it was a matter of time until we would have community spread.”

However, Anderson said that the tour guide likely came in contact with many visitors coming from areas with cases of infection.

“As far as we know, there was no widespread circulation of the virus in the community where the individual lived,” Anderson said. “The fact that one individual infected other members of the family, that’s not unusual, and the fact that we can’t identify the specific individual who was infected who the case was exposed to is also not surprising.”

The other Oahu resident who tested positive in the latest batch of private lab results had traveled to Las Vegas with a partner. Anderson said the department still is working to get dates of travel and symptoms. Because the person is a health care worker, the facility is notifying all patients and staff who may have had close contact with the individual. The person is self-isolating at home, and family members have been advised to self-quarantine.

“The department is still gathering and verifying information on all these cases,” Anderson said.

Anderson said that two additional reports are being confirmed from Tripler Army Medical Center, which is able to test for COVID-19. He said that both reports are on Oahu.

* Colleen Uechi can be reached at cuechi@mauinews.com.