STD Awareness: New STDs on the Block, and STDs Making a Comeback

Lately, a lot of us have had tunnel vision when it comes to infectious diseases. We talk about how long the virus that causes COVID-19 can live on various surfaces, even though other viruses can live on those same surfaces for even longer. We wonder if it can be sexually transmitted, while there are dozens of other bugs out there that are even more easily passed through sexual contact. There are more microbes out there than just the one that causes COVID-19, and we need to be mindful of their risks, too.

Last month, the New England Journal of Medicine published a piece about “old-timey” STDs that are making a comeback (think shigellosis), newer STDs to hit the scene (think Zika virus), and “classic” STDs that are finding new ways to harm us (think antibiotic-resistant gonorrhea). Let’s meet this rogues’ gallery of sexually transmitted bugs.

Shigella bacteria. Image: CDC

Shigellosis is a diarrheal disease caused by Shigella species of bacteria, which can be found in abundance in feces — making it relatively easy to pick up these bugs during sexual encounters involving oral-anal contact (“rimming” or anilingus). While Shigella are mostly transmitted through nonsexual routes, researchers have discovered that sexually transmitted shigellosis is much more likely to be resistant to multiple antibiotics — making them a serious threat.

Reduce your risk by practicing good hand hygiene and keeping a clean kitchen and bathroom; using condoms and dental dams during sex. Continue reading

STD Awareness: Trichomoniasis, the Pear-Shaped, Blood-Sucking, Silent Scourge

What’s shaped like a pear, hangs with a posse of bacteria, and is a silent scourge upon millions of urogenital tracts? I hope you guessed Trichomonas vaginalis, the single-celled parasite that causes trichomoniasis, or trich (pronounced “trick”). Trich is the most common curable sexually transmitted disease out there — currently afflicting around 3.7 million Americans and 156 million Earthlings.


These single-celled creatures pack a punch, but the body fights back.


When trich causes symptoms, sufferers might experience vaginal discharge (which sometimes has a bad odor), penile burning or discharge, spotting, and itching or swelling in the genital area. But around 70 percent of infections have no symptoms at all, making it a mostly “silent” disease. Based on the totality of the evidence, the Centers for Disease Control and Prevention (CDC) doesn’t currently recommend routine screening for trich in people without symptoms.

But it’s the subject of some debate. Since both symptoms and screenings are rare, and the disease isn’t reportable, some health experts worry that trich could be doing a lot of damage right under our noses. An infection during pregnancy could increase risk for preterm labor or low birth weight. It can increase risk for both acquiring and transmitting HIV from or to a partner. Women with trich are more likely to acquire an HIV infection when sexually exposed to the virus — in fact, one study estimated that 6.2 percent of all HIV infections among U.S. women could be attributed to trich. It’s also easier to catch HIV from a man with trich than from a man without trich. Continue reading

Learning About Alcohol and Drug-Related Birth Defects

The week of May 14 is Alcohol and Drug-Related Birth Defects Awareness Week. According to the National Council on Alcoholism and Drug Dependence:

About 20% of pregnant women smoke cigarettes, 12% drink alcohol and 6% use an illicit drug at least once during pregnancy. These numbers are very alarming. If only people knew the dangers of their decisions, perhaps we would be looking at something more acceptable in those numbers.

So what are some of the dangers posed by these substances to a developing fetus?

Effects of Tobacco Use

According to the Centers for Disease Control and Prevention, the fetus gets less oxygen when the mother smokes. Smoking during pregnancy is a risk factor for low birth weight, preterm birth, placenta problems, miscarriage, and sudden infant death syndrome (SIDS).

Effects of Alcohol Use

I have written about the effects of alcohol use during pregnancy before — in fact, it was the subject for the first article I wrote for this blog.

Alcohol easily passes through the placenta, so when a pregnant woman drinks, so does her fetus. Continue reading

STD Awareness: Is There a Vaccine for Syphilis?

Before antibiotics, syphilis was the most feared sexually transmitted disease (STD) out there. It was easy to get, quack cures were ineffective and often unpleasant, and it could lead to blindness, disfigurement, dementia, and even death. Syphilis rates were highest during World War II, and plummeted when penicillin became widely available later in the 1940s. By 2000, syphilis rates hit an all-time low, and many scientists thought the United States was at the dawn of the complete elimination of syphilis.

What a difference an antibiotic makes. Image: CDC

Unfortunately, it soon became apparent that syphilis wasn’t ready to go out without a fight. Since 2000, syphilis rates have nearly quadrupled, climbing from 2.1 to 7.5 per 100,000 people by 2015 — the highest they have been since 1994. If you look at the above graph, you might think syphilis rates have been pretty stable over the past 20 years — but if you zoom in, the fact that we’re in the midst of an epidemic becomes more clear.

After hitting an all-time low in 2000, syphilis rates have been increasing nearly every year since.

The epidemic is disproportionately affecting men who have sex with men (MSM), with Arizona seeing a higher-than-average syphilis rate in this group. Additionally, syphilis rates are climbing among women, who have seen a 27 percent bump between 2014 and 2015. And, since women can carry both syphilis and pregnancies, a rise in syphilis in this population also means a rise congenital syphilis (the transmission of syphilis from mother to fetus), which causes miscarriages, stillbirths, preterm births, neonatal death, and birth defects. Ocular syphilis — that is, syphilis infections that spread to the eyes and can lead to blindness — is also on the rise.

Men, women, babies — no one is immune to the grasp of syphilis. Continue reading

STD Awareness: Is Chlamydia Bad?

chlamydiaPerhaps your sexual partner has informed you that they have been diagnosed with chlamydia, and you need to get tested, too. Maybe you’ve been notified by the health department that you might have been exposed to chlamydia. And it’s possible that you barely know what chlamydia even is, let alone how much you should be worried about it.

Chlamydia is one of the most common sexually transmitted diseases (STDs) out there, especially among young people. It can be spread by oral, vaginal, and anal sex, particularly when condoms or dental dams were not used correctly or at all. It is often a “silent” infection, meaning that most people with chlamydia don’t experience symptoms — you can’t assume you don’t have it because you feel fine, and you can’t assume your partner doesn’t have it because they look fine. If you’re sexually active, the best way to protect yourself is to know your partner’s STD status and to practice safer sex.


Chlamydia increases risk for HIV, leads to fertility and pregnancy problems, and might increase cancer risk.


The good news about chlamydia is that it’s easy to cure — but first, you need to know you have it! And that’s why it’s important for sexually active people to receive regular STD screening. Left untreated, chlamydia can increase risk of acquiring HIV, can hurt fertility in both males and females, can be harmful during pregnancy, and might even increase risk for a certain type of cancer. So why let it wreak havoc on your body when you could just get tested and take a quick round of antibiotics?

To find out just how seriously you should take chlamydia, let’s answer a few common questions about it.

Can Chlamydia Increase HIV Risk?

Chlamydia does not cause HIV. Chlamydia is caused by a type of bacteria, while HIV is a virus that causes a fatal disease called AIDS. However, many STDs, including chlamydia, can increase risk for an HIV infection, meaning that someone with an untreated chlamydia infection is more likely to be infected with HIV if exposed to the virus. Continue reading

STD Awareness: Mycoplasma genitalium

“I’m not small, I’m just streamlined!” Image of Mycoplasma genitalium adapted from American Society for Microbiology.

In November and December of last year, headlines touting a “new” STD made an ever-so-minor flurry across the Internet. CNN referred to it as “mycoplasma genitalium, or MG” — Mycoplasma genitalium is the name of the teardrop-shaped bacteria that can cause several diseases in the urinary or reproductive tracts, such as urethritis and pelvic inflammatory disease.

M. genitalium is the smallest living organism known to science, having “devolved” from more complex organisms — but that doesn’t mean it can’t pack a punch! While these bacteria have surely been around for millennia, we only discovered them in the 1980s. Since then, we’ve known that M. genitalium fits the profile of a sexually transmitted pathogen — the only reason it made the news last year was that a team of British researchers published further evidence that this bug is indeed sexually transmitted and capable of causing disease.


Genital mycoplasmas can be cured — but a doctor needs to know what she’s looking for in order to prescribe the correct antibiotic!


An infection with M. genitalium could more generally be called a “genital mycoplasma.” The term “genital mycoplasmas” refers to a category of several different species of sexually transmitted bacteria, most notably Mycoplasma genitalium, but also less common species, such as Mycoplasma hominis, Ureaplasma urealyticum, and Ureaplasma parvum. M. genitalium is considered an “emerging pathogen,” because it is only over the past couple of decades that technology has allowed us to study these bacteria, along with other genital mycoplasmas.

Risk factors for infection include multiple sexual partners and not using condoms during sex. It is thought that most people with an M. genitalium infection don’t have immediate symptoms — 94 percent of infected men and 56 percent of infected women won’t notice anything amiss. That doesn’t mean it can’t do damage. Continue reading

World Prematurity Day: A Time to Reflect on the Importance of Prenatal Care

The following guest post comes to us via Edna Meza Aguirre, regional associate development director for Planned Parenthood Arizona. Edna is a native Tucsonan, bilingual and bicultural. She received her JD from the Sandra Day O’Connor College of Law and worked in the area of criminal defense for 12 years before changing careers. Edna is in her 16th year of volunteering at the University of Arizona Medical Center’s neonatal intensive care unit helping comfort newborn babies.

baby_feetThe neonatal intensive care unit (NICU) I volunteer in is among the best in the country. It is known nationwide for the cutting-edge research and techniques that not only save the life of a premature baby, but encourage that same infant to thrive.

The moment the delivery health care staff senses the as-yet unborn child is in stress, the amazing doctors, nurses, and respiratory therapists are on the scene in the delivery room. As in a well-coordinated symphony, the lifesaving process begins. Through the priceless intervention of these medical professionals, I have seen babies born blue return to a normal color. I have seen listless children born with no sign of life emerge back into this world through the medicine and touch of these professionals. I’ve seen sobbing parents struggling with this difficult reality as hospital staff explain the problem at hand with caring words and a gentle tone.


There isn’t a single parent who isn’t deeply emotionally affected by watching their vulnerable baby receive treatment.


Premature birth, also called preterm birth, occurs when a baby is born before the pregnancy has reached 37 weeks, and affects 1 out of every 10 babies born in the United States. Because the last few weeks of pregnancy are so crucial to a baby’s development, being born too early can lead to death or disabilities, such as breathing, vision, or hearing problems, as well as cerebral palsy and developmental delays. Treatment can sometimes depend on how premature the baby is. With a normal gestation period of 40 weeks, a premature baby might be born at 25 weeks, 30 weeks, etc. This time frame can be calculated easily enough with mothers who are receiving prenatal care.

There are, however, cases where the mother has received no prenatal care and doesn’t know how many weeks pregnant she is. Continue reading