An outbreak of the coronavirus among migrant apple pickers at an orchard in Addison County has grown by one case to 28, Champlain Orchards said Thursday.

The worker tested positive on Wednesday evening and was already in isolation housing, the orchard said in statement.

“We are checking in with the quarantined crew several times a day. Everyone (thankfully!) is doing really well so far,” Champlain Orchards said.

Vermont Health Commissioner Dr. Mark Levine said earlier in the week that the outbreak has been contained and there is no threat to the public.

Officials have not said where the migrant workers are from, but state Deputy Agriculture Secretary Alyson Eastman had previously noted that that many foreign apple pickers in Vermont are from Jamaica.

In other developments related to the coronavirus in Vermont:

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IN-PERSON LEARNING

A low number of cases of the virus that causes COVID-19 means students in Burlington will be able to spend more time in class rather than study online.

WCAX-VT reports Burlington officials say starting Oct. 19, students in kindergarten through grade 2 will transition from two days of in-person learning to four days.

On Oct. 26, student in grades 3 through 5 will make the same transition.

In a virtual meeting Wednesday, Mayor Miro Weinberger said the low number of virus cases in the city in September was better than officials could have expected.

“The numbers in our schools, in the city and the state are suggesting that it’s time to move back to more in-person instruction," Burlington School Superintendent Tom Flanagan said during the meeting with the mayor.

Since August, the University of Vermont and Champlain College have conducted nearly 70,000 virus tests with 27 students testing positive.

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THE NUMBERS

Vermont reported 11 new cases of the coronavirus on Thursday for a statewide total to date of 1,838. One person was hospitalized with COVID-19. Four of the new cases were in Chittenden County, three in Washington County, two in Windsor County, and one each in Franklin and Bennington counties.

For most people, the coronavirus causes mild or moderate symptoms, such as fever and cough that clear up in two to three weeks. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia or death.

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This story has been corrected to show that school transition is scheduled to start Oct. 19, not Sept. 19.