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Sexually transmitted diseases are spiking in California

Petri dish
The bacterium responsible for gonorrhea visible in a urine sample. Photo: Smith Collection/Gado/Getty Images

There were over 300,000 cases of chlamydia, gonorrhea, and early-stage syphilis detected in California during 2017 — a 45% jump from 2012 and the highest levels since 1990, the San Francisco Chronicle reports.

What's happening: Lower rates of condom usage and fewer STD clinics are driving the increase. But a new factor is social media, James Watt, of California Health Department, tells the Chronicle.