Seton Hall University is seeing an uptick in new coronavirus cases, which has the school urging students to be more careful off campus.

A total of 27 students have tested positive for the virus so far this month.

A letter posted on the university's website says a majority of the recent cases were traced back to two clusters. One of the outbreaks occurred among various athletic programs and the other within a Greek organization.

In a statement, the South Orange school says: "As we have seen with recent national and state news, no one is immune to the spread of the virus. In order for each of us to remain healthy and safe, we must be vigilant in our health and safety protocols. We realize uncertainty resulting from the ever-changing nature of the pandemic can cause tremendous anxiety. As a university community, we must come together in support and mutual affection."

The letter reiterated that gatherings, both on and off campus, should not occur and students need to remember to be careful especially with Halloween this weekend.

Administrators say the outbreak won't require them to put all classes online, but a future one might.

Seton Hall is working with the town on contact tracing, testing and isolating.