Sept 30 (Reuters) - A U.S. judge upheld the University of California's COVID-19 vaccine requirement against a challenge by a professor who alleged he had immunity due to a prior coronavirus infection, in what appears to be the first ruling on the issue.

U.S. District Court Judge James Selna in Santa Ana, California, said the university system acted rationally to protect public health by mandating the vaccine and not exempting individuals with some level of immunity from an infection.

The U.S. Centers for Disease Control and Prevention (CDC) said on Aug. 6 that a study showed vaccines offer better protection than natural immunity gained from prior infection, which wanes over time.

He told Reuters he plans to use the discovery process to determine how the policy was formulated and to question the university's expert witnesses about their reasoning for rejecting his arguments on natural immunity.

I think he's going to find there's no reason - it just is.

Same with vaccinating children.