A man wears a mask on Tuesday, July 12, 2022, in Los Angeles, California.

A man wears a mask on Tuesday, July 12, 2022, in Los Angeles, California. (Irfan Khan/Los Angeles Times/TNS)

LOS ANGELES — Emerging evidence suggests that catching the coronavirus a second time can heighten long-term health risks, a worrisome development as the circulation of increasingly contagious omicron subvariants leads to greater numbers of Californians being reinfected.

Earlier in the pandemic, it was assumed that getting infected afforded some degree of lasting protection, for perhaps a few months.