San Diego County public health officials reported 560 new coronavirus cases and nine new deaths Thursday, raising the county’s totals to 18,402 positive cases and 415 deaths. Plus, single-use plastic bags are banned again after making a brief return to grocery stores across the state due to COVID-19. But many bags are still lingering in the trash. Finally, KPBS Arts Editor Julia Dixon-Evans previews some of this weekend’s top arts events, including a performance by local rapper Ric Scales, an art show to benefit a historically poor neighborhood in Tijuana and a “fun-size” virtual performance of “Matilda” the musical.