The U.S.-based service lets users notify former partners about chlamydia, gonorrhea and trichomoniasis.
Out of California's 58 counties, San Diego and Fresno counties are among the highest for both chlamydia and gonorrhea cases.
According to the CDC, 700, 000 new cases of gonorrhea are diagnosed in the United States every year, second only to chlamydia.
In her 14 years of practicing, she has been diagnosing more and more cases of chlamydia, syphilis and gonorrhea, she said.
Barnes was born poor in Philadelphia in 1872, became a doctor, and made a fortune by trademarking a medicine that treated gonorrhea.
In 2011, Los Angeles-area youths between 13 and 19 contracted 25% of chlamydia cases and 16% of gonorrhea cases, according to the Los Angeles County Health Department.
In 2011, more than 42, 000 cases of chlamydia and 4, 800 cases of gonorrhea were reported in that age group, according to the California Department of Public Health.
Since the early 1980s, there has been a dramatic downturn in gonorrhea cases, but for the last 10 years, the rates have leveled off, especially in African-American populations.
Annual gonorrhea screening is also recommended for sexually active women with new or multiple sex partners and women who live in communities with a high burden of the disease.
Studies like the one one on chlamydia and gonorrhea will hopefully help flesh out the interaction between internet hook-ups and health risks so that we can better target at risk groups for preventative education.
While it would be a formidable task to check every study Wagenaar et al. subsumed in their meta-analysis, a quick check to find out whether they included a study with a known systematic bias reveals the study included Chesson et al., a study by the Centers for Disease Control which claimed that increased beer taxes could reduce the rate of gonorrhea.
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