SACRAMENTO (CBS13) – Dozens of positive COVID-19 cases have been identified at C.K. McClatchy High School over the past two weeks, officials said.

On Wednesday, a Sacramento City Unified School District official announced they’ve had 50 positive cases at the campus since April 21.

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Notably, officials say at least 21 of those positive cases were from people who attended the school’s junior prom. However, SCUSD says overlapping social and school contacts have made it hard to trace exactly where the outbreak started.

The district notes that everyone who attended Junior Prom was required to show either proof of vaccination or a negative COVID test.

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Despite the outbreak, district officials are defending the decision to hold events like prom.

“With the mental health impact of the pandemic – these types of extra-curricular events typically bring hope and joy for those attending and engaging,” said SCUSD Student Support & Health Services Director Victoria Flores in a statement. “As COVID remains a concern, this is the balance we continue to weigh.”

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The latest state numbers show California’s COVID cases and test positivity rate on a gradual increase over the past few weeks. Still, deaths have not shown any signs of increasing.