MOUNTAINSIDE, NJ — A house party in Mountainside has led to “at least” 10 Governor Livingston High School students testing positive for COVID-19, authorities said.

Mayor Paul Mirabelli in a post to the borough’s Facebook page Friday reported the information provided by Westfield Regional Health Department Director Megan Avallone and encouraged parents to self-report their children’s positive COVID-19 tests directly to the health department.

“I was also made aware of a house party in Mountainside which resulted in at least 10 Mountainside high schoolers testing positive,” Mirabelli said. “I am told by Ms. Avallone that many of these positive tests are not being reported to the Westfield Regional Health Department by the medical providers in a timely fashion.”

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The posting did not detail where in Mountainside the house party was or when it occurred. However, the mayor blamed the high school’s recent transition to remote learning on parties. The news comes amid a statewide increase in transmission of coronavirus.

“House parties that exceed 25 persons especially where the individuals are not wearing masks and are not practicing social distance are unacceptable, shameful and are prohibited,” Mirabelli said. “They are super spreaders that have caused our High School to go all remote and the cancellation of all high school sports which has caused teams to forfeit Union County Tournament Games.”

Mirabelli said that he has authorized additional police overtime so officers can conduct patrols to prevent such parties.

He also requested that if any student has tested positive for coronavirus that the parents voluntarily report the positive tests to the Health Department so that it can conduct contact tracing.