As essentially part of Los Angeles, it is no surprise that San Fernando has high STD rates. Health officials are looking to change this, and part of that effort includes a progressive sex education curriculum in California schools, which seems to be helping to reduce the STD rates among youth.
You can often find free STD testing events to achieve this goal, too.
In San Fernando, 282 people were diagnosed with HIV in 2016, and 92 with AIDS. There were an estimated 7,444 people living with HIV or AIDS, with a prevalence rate of 330 per 100K people. The 2017 chlamydia, gonorrhea, and (primary and secondary) syphilis rates for Los Angeles County were 626.2, 254.2, and 19.5 per 100K people. The San Fernando rates would have been a bit lower.
There are many STD-testing clinics in San Fernando, and even more options in the surrounding areas. The San Fernando Community Health Center screens and treats STDs. You can find them on Mott St.
The San Fernando Health Center on Pico St also does STI testing. The Northeast Valley Health Corporation, on San Fernando Rd, also provides STI and HIV services, including testing, treatment, and counseling.