WORCESTER, Mass. - The number of people getting tested for COVID-19 at the Mercantile Center is rising.

There were more long lines outside of the testing center Monday.

UMass Memorial Health runs the site and said they expect to test more than 1,000 people both Monday and Tuesday.

They said about 13% of the people they test are positive for COVID-19.

The Mercantile Center location also offers both adult and pediatric doses of the COVID-19 vaccine.

As the holidays quickly approach, they are encouraging everyone to get vaccinated.

"Our advice to people is to get the booster as soon as possible,” said Michelle Muller of UMass Memorial Health. “When you get the booster, after you've been fully vaccinated, your antibodies to go up pretty quickly, so you can still get your booster in time for some additional protection for the holidays.”

UMass Memorial Health said they are expecting the number of positive cases to increase after the holidays.

They are encouraging people to mask up if they plan on gathering with family or friends.