A federal appeals court revived a lawsuit challenging the COVID-19 vaccine mandate imposed by the Los Angeles school district, noting that the record does not clearly show whether the vaccines prevent the transmission of COVID-19. The U.S. Court of Appeals for the Ninth Circuit reversed a ruling, extending the debate over government-mandated medical treatment beyond public health concerns, even after the mandate was rescinded in 2023. Opponents argue the mandate violates employee rights, claiming COVID-19 vaccines do not effectively prevent infection.