A recent jump in Island coronavirus cases continued on Thursday, with health agents reporting two more positive tests — marking four new cases in the last two days and five since the Fourth of July.

Island health officials reported one new positive coronavirus patient from the TestMV site and two more who had tested positive for viral antibodies.

Island health agents reported a new coronavirus case on Monday, bringing the Vineyard’s total Covid-19 case-count to 49 since the outbreak began in mid-March.

TestMV, the comprehensive coronavirus testing site at Martha’s Vineyard High School, saw its first positive Covid-19 result on Wednesday.

No new cases of coronavirus were reported Tuesday, marking the ninth day in a row without a confirmed positive on the Island even as testing capacity continues to expand.

The comprehensive coronavirus testing facility at the Martha’s Vineyard Regional High School was opened to the public on Monday, less than three weeks after it was announced.

Island health officials have announced a unique, public-private partnership with Quest Diagnostics to make coronavirus testing available for all Vineyard residents.