Covid-19 cases continued to climb on the Island Wednesday, with the Martha’s Vineyard Hospital reporting the third positive coronavirus case in just as many days, bringing the Islandwide total to 18 since the outbreak began.

In their daily testing update, the hospital reported that as of 10 a.m. on Wednesday, 18 people on the Island had tested positive for the virus, up one from their report on Tuesday. The hospital has tested 394 patients over the past two months, with 372 negatives and four pending.

The new case was a female in her sixties, according to daily case numbers from the Island boards of health. The Vineyard now has eight male and 10 female patients who have tested positive for the virus. In terms of age breakdown, one patient on the Island is under 20, two are in their 20s, two are in their 30s, seven are in their 50s and six are in their 60s.

On Wednesday, the state’s weekly town-by-town update of cases showed that Chilmark, Edgartown, Oak Bluffs and Tisbury all had fewer than five coronavirus patients. West Tisbury had the most on-Island, with seven, and Aquinnah had zero. Aquinnah has previously reported a single case, but the state only reports exact case numbers when towns register more than five positive patients.

Island boards of health are not reporting cases on a town-by-town basis for privacy reasons.

Statewide, the Massachusetts Department of Public Health reported 1,963 new confirmed cases of coronavirus Wednesday afternoon, bringing the state’s total to over 60,000. The state also reported 245 deaths on Wednesday, up from 150 the day before.

The 95-person increase marked the largest single-day increase in deaths since the outbreak began. More than 3,400 people have died from Covid-19 in the state.

The Vineyard hospital currently has no patients hospitalized with the virus. Four patients have been hospitalized with Covid-19 at different points during the outbreak. Three were transferred to hospitals in Boston.

On Tuesday, hospital officials clarified their answer to a question posed during a press briefing, writing in an email afterward that a Covid-positive patient who had been transferred off-Island had died from causes “not proven” to be Covid-19.

“One patient included in our Covid-positive test count was transferred off-Island due to health complications,” hospital spokesman Katrina Delgadillo wrote in the email. “This patient unfortunately passed away while receiving care in Boston due to medical complications not proven to be related to Covid-19.”

Responding to questions from the Gazette in a follow-up email, Ms. Delgadillo said the Covid-positive patient was transferred to Boston via Med Flight in late-March with health complications unrelated to Covid-19. She wrote that the patient who died would not be counted as a Covid-related death, according to Dukes County.

Ms. Delgadillo said she could not release any more information because of patient privacy laws.

She also said the other two Covid-related transfers from the VIneyard hospital to Boston have been discharged.

The new case on the Island comes as Gov. Charlie Baker announced on Tuesday that he had extended the state’s stay-at-home advisory for two weeks, shuttering non-essential businesses until May 18 at the earliest.

Vineyard towns have instituted their own, stricter stay-at-home orders that include bans on construction and landscaping.

Island contractors, however, continued to get back to work on Wednesday after towns relaxed their strict construction bans earlier in the week. Monday marked the first day of the Island’s back-to-work guidelines, allowing one and two-man crews on jobsites.