Colorado Sees a Shocking Rise in Sexually Transmitted Infections

An image from a recent report about sexually transmitted infections by the Colorado Department of Public Health & Environment.
Colorado Department of Public Health & Environment
An image from a recent report about sexually transmitted infections by the Colorado Department of Public Health & Environment.
A recent report from the Colorado Department of Public Health & Environment shows a steady and disturbing increase in the number of sexually transmitted infections in the state, including a jump in gonorrhea cases of just under 200 percent over a five-year period.

The number of individuals treated for the three reportable STIs — chlamydia, gonorrhea and syphilis — was highest in Denver during 2017, the most recent year for which full data is available; the annual report is accessible below. But the rates of infection in many rural areas often exceeded those in more populous areas.

"If you simply count, there were thousands of cases of chlamydia in Denver metro and 100 or fewer in other regions of the state," notes Dr. Daniel Shodell, the CDPHE's deputy director for disease control and environment epidemiology. "So you think, okay, then the focus is on urban areas. But when you adjust for population, you can see there are multiple parts of the state where there are significant concerns."

Colorado's STI rates as a whole aren't among the nation's worst. Indeed, a study by the federal Centers for Disease Control and Prevention also linked at the bottom of this post finds the state at number 28 among the fifty states for rate of chlamydia, number 27 for gonorrhea and number 33 for primary and secondary syphilis. But Shodell suggests that analytics of this sort can be deceptive.

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This graphic depicts reported gonorrhea cases and rates of reported cases in Colorado from 2008 to 2017.
Colorado Department of Public Health & Environment
"We don't stand out as a problem in the context of the overall U.S. burden of STIs," he says. "But when you look at the rate of increase, it's alarming."

The CDPHE document's executive summary underscores this point. In 2017, there were 36,291 newly reported STI cases: 26,995 involving chlamydia, 8,478 pertaining to gonorrhea and 818 dealing with all stages of syphilis. Those are the highest figures ever recorded in the state for each of the three conditions.

The rate of chlamydia during 2017 — 481.3 cases per 100,000 people — represents a 23.0 percent increase since 2013. The syphilis rate was more than two times higher: 14.6 cases per 100,000 people, a 61.5 percent leap over the same span. And the 151.3 cases of gonorrhea per 100,000 people is up 182.3 percent in five years.

Shodell stresses that the infections don't discriminate. "There's no race, no ethnicity, no sexual orientation that's safe from STIs in Colorado. Syphilis is a good example. That's really impacting men who have sex with men, primarily, but we're seeing increases in syphilis among women of reproductive age, too. It's not a big number yet" — from fewer than thirty in 2013 to more than seventy in 2017 — "but it's still a major concern."

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This map displays rates of reported gonorrhea cases by county in 2017. Dark green represents the highest rates, as seen in counties such as Pueblo, Montezuma and Alamosa.
Colorado Department of Public Health & Environment
Age doesn't exempt Coloradans from STIs, either, as indicated by one of the report's most startling revelations: Eighteen newborns were diagnosed with congenital syphilis in the 2013-2017 range.

Why are these stats getting so much worse? Shodell says medical professionals like him are considering several different theories.

"Is it unsafe sex?" he asks. "We've been looking at possible connections with dating apps — what we more formally refer to as geo-social networking apps — like Tinder and Grindr. Is it treatment? We've had years of STIs building up in the population, and now they could be spilling over to the point where we're seeing accelerating transmissions. Are we seeing STIs in more anatomic sites? For example, you can have gonorrhea of the throat or the anus, if a man is taking part in anal sex. That all could be part of the picture."

And then there's what Shodell refers to as "the role of stigma and discrimination overall. The fact that people don't want to talk about STIs may lead to them not seeking care in a timely manner. Any and all of these ideas are likely in play."

As for how to reduce these numbers, Shodell believes that "awareness is a big part of it. We want folks to know that STIs are up, so they know they need to test and treat themselves — and use a condom every time. We also want to see local responses, including increased funding to jurisdictions that are most heavily increased and better access to treatment, so that people can be treated quickly. And we want to do better partner identification and notification, which is something the state does with disease intervention specialists. We have people go into the field and interview folks who may have been newly diagnosed so we can let partners know, 'You might want to seek testing, because you might have been exposed.'"

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The raw numbers in regard to reported chlamydia, gonorrhea and early syphilis cases in 2017, sorted by demographics.
Colorado Department of Public Health & Environment
In addition, he goes on, the CDPHE wants to "work more with providers, to make sure they're aware this is an issue and that they should consider screening among their patient population to make sure they're aware of the risk. With gonorrhea, in particular, we're seeing what we would call an emergence of reduced susceptibility to treatment — and that could mean it's on the road to drug resistance. We haven't seen any treatment failures in Colorado yet, but we don't want to be on that path."

Getting tested and treated for these STIs "is pretty straightforward," Shodell emphasizes. "Nobody likes to go to the doctor, but these aren't difficult tests, and treatment is often a one-time dose of antibiotics. You'll probably get a shot, but then you'll get better."

By doing so, you'll help stop the spread of infections that are all too common in Colorado these days.

Click to read "Sexually Transmitted Infections in Colorado: 2017 Annual Report" and "Sexually Transmitted Disease Surveillance 2017," from the Centers for Disease Control and Prevention.