Rapidly increasing cases of newborn syphilis have reached their highest prevalence in 2 decades, according to a new report by the Centers for Disease Control and Prevention on sexually transmitted disease surveillance in 2017.
U.S. Centers for Disease Control and Prevention
Newborn syphilis incidence has more than doubled, from 362 cases in 2013 to 918 cases in 2017, resulting in 64 syphilitic stillbirths and 13 infant deaths that year, according to data published in Sexually Transmitted Disease Surveillance 2017.
At least one case was reported in 37 states last year, and the greatest burden of cases occurred in California, Arizona, Texas, Louisiana, and Florida, together accounting for 70% of all 2017 cases.
“The resurgence of syphilis, and particularly congenital syphilis, is not an arbitrary event, but rather a symptom of a deteriorating public health infrastructure and lack of access to health care,” wrote Gail Bolan, MD, director of the Division of STD Prevention at the CDC’s National Center for HIV/AIDS, Viral Hepatitis, STD and TB Prevention. “It is exposing hidden, fragile populations in need that are not getting the health care and preventive services they deserve.”
Dr. Bolan recommends modernizing surveillance to capture more of the cases in populations without ready access to diagnosis and treatment and in those choosing not to access care.
“It is imperative that federal, state, and local programs employ strategies that maximize long-term population impact by reducing STD incidence and promoting sexual, reproductive, maternal, and infant health,” she wrote. “Further, it will be important for us to measure and monitor the adverse health consequences of STDs, such as ocular and neurosyphilis, pelvic inflammatory disease, ectopic pregnancy, infertility, HIV, congenital syphilis, and neonatal herpes.”
Multiple sources contributed data to the report: state and local STD programs’ notifiable disease reporting, private and federal national surveys, and specific projects that collect STD prevalence data, including the National Job Training Program, the STD Surveillance Network and the Gonococcal Isolate Surveillance Project.
The four nationally notifiable STDs are chlamydia, gonorrhea, syphilis, and chancroid.
The rise in newborn syphilis cases, currently at 23.3 cases per 100,000 live births, mirrors the increased U.S. prevalence of both primary and secondary syphilis in 2017, with 9.5 cases per 100,000 people. Syphilis has increased every year since 2000-2001, when prevalence was at a record low.
Chlamydia and gonorrhea rates climb too
The report also noted increases in the prevalence of other STDs. Chlamydia, the most common STD, increased 6.9% as compared to 2016, with 528.8 cases per 100,000 people. This increase occurred in all U.S. regions and independently of sex, race, or ethnicity, though rates were highest in teens and young adults. Nearly two-thirds of chlamydia cases in 2017 occurred in people ages 15-24 years old.
Reported rates were higher in women than in men, likely due to women’s increased likelihood of undergoing screening, the report suggested. Better surveillance may also partly explain the climb in men’s cases.
“Increases in rates among men may reflect an increased number of men, including gay, bisexual and other men who have sex with men (collectively referred to as MSM) being tested and diagnosed with a chlamydial infection due to increased availability of urine testing and extragenital screening,” according to the report.
The CDC received reports of more than a half million gonorrhea infections in 2017 (555,608 cases), an increase of 18.6% since the previous year, including a 19.3% increase among men and a 17.8% increase among women.
“The magnitude of the increase among men suggests either increased transmission, increased case ascertainment (e.g., through increased extra-genital screening among MSM), or both,” the authors wrote. “The concurrent increase in cases reported among women suggests parallel increases in heterosexual transmission, increased screening among women, or both.”
Overall, gonorrhea cases have skyrocketed 75.2% since their historic low in 2009, compounding the problem of antibiotic resistance that has limited CDC-recommended treatment to just ceftriaxone and azithromycin.
The report was supported by the Centers for Disease Control and Prevention. The authors did not report having any disclosures.
SOURCE: Centers for Disease Control and Prevention. Sexually Transmitted Disease Surveillance 2017; https://www.cdc.gov/std/stats