STD Awareness: Sexual Transmission of Zika Virus

Zika

Zika virus. Image: Cynthia Goldsmith, CDC

I first heard of Zika virus in an epidemiology class, when another student made on offhand remark: “Did you know Zika virus can be transmitted sexually?” Ever vigilant for material for the STD Awareness column, I excitedly scribbled the name of the virus in my notes. But upon further investigation, I found that there were only a couple of documented cases of the sexual transmission of this virus that no one had heard of, and decided there was no reason to freak people out about yet another potential STD when rates of more common STDs, like chlamydia and gonorrhea, were on the upswing.

A year later, Zika virus was splashed across headlines on a daily basis, mostly for its newfound association with birth defects, but also in light of revelations that it could be transmitted by sex.


Access to condoms and reliable contraception is more vital than ever.


While Zika virus is usually transmitted by mosquito bites, the discovery that it can be sexually transmitted made it the only known virus that could be spread both sexually and by mosquitoes. It’s also the only known mosquito-borne virus that can cross the placenta to harm a fetus. Like several other viruses, including CMV and rubella, Zika is implicated in serious birth defects. But many health authorities worry that its potential as a sexually transmitted pathogen is dangerously underestimated. As of August 31, there have been 23 confirmed sexually transmitted cases of Zika virus in the United States — but sexual transmission will rise as the virus jumps into local mosquitoes, which will also make it difficult or impossible to tell if a sexually active Zika patient got the virus from sex or directly from a mosquito.

Earlier this year, sexually transmitted Zika virus in Texas made headlines, with many journalists incorrectly proclaiming it the first known case of sexual transmission. In fact, Zika’s sexual transmission was first documented in 2008, before “Zika” was a household name and the married couple who published their experience in a scientific paper thought they could share their STD status in relative obscurity. Despite referring to themselves as “Patient 1” and “Patient 3,” a science reporter quickly figured it out and (with their permission) revealed their identities in a 2011 article — still years before Zika-bearing mosquitoes would hit the Americas and trigger a microcephaly epidemic that propelled the virus to infamy. Continue reading

STD Awareness: What Does “Congenital Syphilis” Mean?

Treponema pallidum, the bacteria that causes syphilis

Treponema pallidum, the bacteria that causes syphilis

Congenital syphilis, for centuries a leading cause of infant mortality, is often thought of as an antique affliction, relegated to history books — but it is on the rise again. Between 2012 and 2014, there was a spike in congenital syphilis rates, which increased by 38 percent and are now the highest they’ve been in the United States since 2001. As of 2014, the last year for which we have data, more babies were born with syphilis than with HIV.

The word “congenital” simply means that the baby was born with syphilis after being infected in the womb. When an expecting mother has syphilis, the bacteria that cause the disease can cross the placenta to infect the fetus — and will do so 70 percent of the time. As many as 40 percent of babies infected with syphilis during pregnancy will be stillborn or will die soon after birth. It can also cause rashes, bone deformities, severe anemia, jaundice, blindness, and deafness. Congenital syphilis is especially tragic because it’s almost completely preventable, especially when expecting mothers have access to adequate prenatal care and antibiotics. Penicillin is 98 percent effective in preventing congenital syphilis when it is administered at the appropriate time and at the correct dosage.


More babies are being born with syphilis — but this trend can be reversed with wider access to prenatal care.


Incidence of congenital syphilis is growing across all regions of the country, but rates are highest in the South, followed by the West. Rates have also been increasing across ethnic groups, but, compared to white mothers, congenital syphilis rates are more than 10 times higher among African-American mothers and more than 3 times higher among Latina mothers, illustrating the need to increase access to prenatal care for all expecting mothers — and to ensure that this prenatal care is adequate.

Anyone receiving prenatal care should be screened for syphilis at their first visit, and some pregnant people — including those at increased risk or in areas where congenital syphilis rates are high — should be screened a second time at the beginning of the third trimester and again at delivery. Continue reading

Contraception Then and Now

When it comes to contraception, one thing is for sure: We’ve come a long way! And while the future might have even better things in store, like reversible male birth control, superior condoms, or remote-controlled implants, a look into the past reveals that modern contraceptors have a bevy of fantastic options to choose from. Unlike couples who had to forgo contraception or obtain birth control from the black market, nowadays Americans wishing to prevent or postpone pregnancy can select from a variety of legal, effective, and increasingly accessible family-planning methods.


While the history of birth control is fascinating, today’s contraception is the very best.


Let’s look at some old-fashioned birth-control methods and see how they stack up to their modern-day counterparts.

Linen and Guts vs. Latex and Polyurethane Condoms

Most people think of female condoms as new inventions, but the first condom recorded in history was made out of a goat’s bladder and inserted into the vagina — way back in 3000 BC. Ancient civilizations, from the Romans to the Egyptians to the Japanese, made penile sheaths and caps with a variety of materials, including linen, leather, lubricated silk paper, intestines, and tortoise shells. Linen and intestines remained popular through the Renaissance era.

A condom, with user manual, 1813. Photo: Matthias Kabel

Charles Goodyear might be most famous for tires, but his discoveries in vulcanizing rubber also led to the development of rubber condoms in the mid-1800s. Unfortunately, the Comstock Act of 1873 outlawed the manufacture and sale of contraception, and condoms were driven into a shadow economy. In the 1880s, New Yorkers might have been lucky to find black-market condoms made from surplus animal intestines, which were manufactured by Julius Schmid, a German immigrant who otherwise specialized in sausage casings — before his business was shut down by the New York Society for the Suppression of Vice. Condoms weren’t legal in the United States until the Crane ruling of 1918, just in time for the 1920 invention of latex, a form of rubber that was much stronger and more elastic — and with a shelf life of five years vs. rubber’s three months. By the 1920s, Schmid was once again on top of the condom game, peddling brands like Sheik, Ramses, and Sphinx.

Condoms made out of intestines are still on the market, sold as lambskin or “natural” condoms. However, they are not recommended for STD protection: Just as intestines need to allow nutrients to enter the body from digesting food, so too are viruses able to pass through condoms made from intestines. (Sperm, on the other hand, are thought to be too big.) These days, latex is the gold-standard material for condoms, while polyurethane can be used by people with latex allergies. Condoms constructed with these modern materials protect users from unintended pregnancy as well as many sexually transmitted infections, such as HIV and chlamydia. Continue reading

May Is National Teen Pregnancy Prevention Month

The following is a guest post by Planned Parenthood Arizona’s Director of Education Vicki Hadd-Wissler, M.A.

mother daughterAt Planned Parenthood Arizona, we hope families are talking about changing bodies, healthy relationships, love, and sex throughout the year, and with May’s National Teen Pregnancy Prevention Month, parents and the important adults in the lives of teens have a unique opportunity to talk with teens about pregnancy prevention. The month is aimed at helping teens to identify their plans for the future, and consider how those plans would be impacted by an unintended pregnancy.

Ongoing conversations between parents and teens build in protective factors. Studies have shown that teens who report having ongoing conversations with their parents about sex wait longer to begin having sex and are more likely to use condoms and other birth control methods when they eventually become sexually active. Even more surprising for many parents is that these studies also show that teens want to hear about what their parents have to say about sex and relationships.

Planned Parenthood Arizona can suggest some amazing resources to fit the needs of your family and to start dialogue with a teen you love. Continue reading

STD Awareness: Which STDs Are Resistant to Antibiotics?

You’ve probably heard of MRSA, which is pronounced “mersa” and stands for methicillin-resistant Staphylococcus aureus — a strain of bacteria that is resistant to methicillin, as well as pretty much every other antibiotic out there. MRSA is an example of evolution by natural selection — what didn’t kill its ancestors made them stronger, spawning a drug-resistant strain.


There are drug-resistant strains of gonorrhea, trichomoniasis, and syphilis.


Evolution is the force behind life’s diversity. Normally, diversity is a good thing — but when it comes to microbes that cause diseases like gonorrhea, trichomoniasis, and syphilis, these organisms’ ability to evolve new defenses against our antimicrobial drugs isn’t good for us.

STDs have plagued us for millennia, but it wasn’t until the 20th century that we finally developed antibiotics, which gave us a powerful tool against many of our most formidable sexually transmitted foes. Suddenly, scourges like gonorrhea and syphilis could be quickly and easily treated with a dose of penicillin.

Problem solved, right? Nope. Enter evolution by natural selection. Continue reading

Square Pegs, Round Holes: Building Trans-Inclusive Health Care

transgenderFor the first time in history, trans persons are being recognized in the mainstream and their identities are being embraced like never before. Laverne Cox’s cover story for Time and Amazon Prime’s original series Transparent winning four Emmys are examples of this recognition.

Kinda.


Today is National Transgender HIV Testing Day.


Truth is, the trans persons in the media are not representative of the norm. The findings of the National Transgender Discrimination Survey — a survey that collected responses from more than 6,000 transgender and gender-nonconforming individuals — give a clearer picture, and it’s not pretty. The authors of this study found trans persons faced adversity in almost all aspects of life, from experiencing double the rate of unemployment to suffering through a high rate of violent attacks (26 percent and 10 percent of the respondents reported being physically and sexually assaulted, respectively) because of their gender identities. Among all these results, I found one to be particularly unsettling:

“Respondents reported over four times the national average of HIV infection, with rates higher among transgender people of color.”

To me, a person born after the AIDS epidemic of the ’80s and privileged with a world that now has readily accessible condoms and HIV prevention medication (i.e., Truvada), HIV seemed like a relic of the past. Examining the amount of new HIV infections in the cisgender population (0.4 percent for females and 1.2 percent for males), this is an easy assumption to make. I was wrong. Other studies echoed the large disparities of HIV incidence and prevalence in trans persons. One systematic review uncovered four studies that found that 24.8 to 30.6 percent of male-to-female (MTF) transgender persons tested positive for HIV. Another study — conducted in Ontario, Canada — sampled 433 trans persons and found 7 percent of female-to-male (FTM) transgender persons and 19 percent of MTF persons had a high-risk sexual experience in the last year. Yet another found that 35 percent of MTF persons (and 2 percent of FTM persons) had HIV, and again, persons of color — in this case, African-American identified individuals — were at a greater risk. Indeed, in this study, African-American trans persons (FTM and MTF) were approximately three to 12 times more likely to have HIV. Given these data, the cynic in me questions, “Is anyone even trying to prevent HIV in trans persons?” Continue reading

Ten Things Your Mother Never Told You About Condoms

holding condomThere are so many claims made about condoms these days that it’s hard to separate fact from fiction. Perhaps you first heard some of these things from your mother, who sat you on her lap one day and calmly demonstrated proper use, with guidelines for when appropriate. Yeah, right. She probably would have spanked you for even mentioning the word. As for your dad, get real.

Like most of us, you probably first heard about condoms in the locker room or from your friends. Or you read something in a magazine or on social media. As a result, your poor head is filled with various myths, rumors, half-truths, and bad jokes, interspersed with a few actual facts. So, herewith are 10 more half-truths or untruths to add to your noggin.

1 Condoms have a high failure rate. According to one website, “18 couples out of 100 who say they use condoms as their primary contraception method will experience an unintended pregnancy in the first 12 months.” Of course, this includes folks out of this same 100 couples who happened not to be using a condom at the time they got pregnant (or during the whole time) — which greatly reduces a condom’s effectiveness — as well as those who were not using the condoms correctly when they got pregnant. (By the way, though this informative website refers to condomology as “the study of condoms,” starting a sentence with “condomologically speaking” is probably not a good idea.) The failure rate decreases substantially, however, when condoms are properly used: “If used correctly every time you have sex, male condoms are 98% effective. This means that two out of 100 women using male condoms as contraception will become pregnant in one year.” Continue reading