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

Why Do Newborns Need the Hepatitis B Vaccine?

The first vaccine a baby receives — within hours or days of birth — protects them from hepatitis B virus (HBV). In a lot of people’s minds, HBV is associated with drug use and sexual activity — which stigmatizes people who have been infected with HBV or are carriers of the virus. Unfortunately, this stigma causes a lot of people to question why babies even need to be vaccinated against it, often pointing to “Big Pharma” conspiracy theories. A lot of other people are put off by the misconception that the HBV vaccine is made with human blood (it’s not).


May is Hepatitis Awareness Month, a time to learn about a childhood vaccine that’s saved millions of lives.


There are perfectly good reasons to vaccinate babies against HBV, mainly that HBV is the leading cause of liver cancer, itself one of the Top 10 types of cancer worldwide. Nine out of 10 infants born to a mother who is an HBV carrier will develop chronic infections and become carriers themselves — and a quarter of them will die prematurely of liver disease. Babies who develop chronic HBV infections are 63 times more likely to develop liver cancer than non-carriers, a connection that is 2 to 3 times stronger than the link between smoking and lung cancer.

When it comes to HBV, age at infection matters. Most people with chronic HBV infections are exposed at birth or in early childhood, when they are most likely to develop chronic, lifelong infections — whereas only 2 to 6 percent of infected adults will develop chronic infections, with only 15 percent of them eventually dying from liver disease. The fact that chronic infection risk is inversely correlated with age at infection means that birth is the time when a child is the most vulnerable to this virus — hence the importance of vaccinating as early as possible. Continue reading

AIDS at 35: The Anniversary of the First Report on a Mysterious New Disease

mmwrOn June 5, 1981 — 35 years ago this Sunday — the Centers for Disease Control and Prevention published a report with an inauspicious title: “Pneumocystis Pneumonia — Los Angeles.” Nestled between pieces on dengue and measles, the article in the Morbidity and Mortality Weekly Report briefly described five patients, all young men from Los Angeles with cases of life-threatening pneumonia. While it didn’t immediately grab headlines, its publication represented a turning point in public health: the beginning of the AIDS era.


In another 35 years, will AIDS be a fading memory?


These patients’ pneumonia had been caused by a particular species of fungus, which back then was responsible for fewer than 100 pneumonia cases annually. Young, healthy people weren’t supposed to be vulnerable to this fungal infection, and the fact that men with no known risk factors were suddenly falling victim to it was a huge red flag that something strange was afoot.

The patients shared other characteristics as well, and at that point, scientists could only speculate what, if any, of these traits were associated with the strange new disease. All five patients were “active homosexuals,” were positive for cytomegalovirus (CMV), had yeast infections, ranged in age from 29 to 36, and used inhalant drugs (aka “poppers”). The CDC knew right away that this mysterious cluster of illnesses must have been caused by “a common exposure that predisposes individuals to opportunistic infections” — an observation that, in hindsight, was incredibly accurate, as HIV destroys the immune system and opens its host to normally rare infections. The editors posited that “some aspect of a homosexual lifestyle” might increase risk for this type of pneumonia — perhaps a sexually transmitted disease that somehow caused pneumonia. Continue reading

Hepatitis B Vaccine: The Importance of the Birth Dose

babiesDid you know that Saturday kicked off National Infant Immunization Week, which is part of a worldwide observance that shines the spotlight on the importance of vaccination? Most of us think of infant immunization as a tool to protect babies from childhood illnesses like chickenpox and whooping cough. But did you know that one infant immunization protects them from cancer later in life?

Globally, hepatitis B virus (HBV) is one of the top causes of cancer. Every year, it kills more than three-quarters of a million people worldwide. An HBV infection might be defeated by the immune system, but when it’s not, it can become a chronic infection. And chronic infections can lead to serious health outcomes, including cirrhosis and liver cancer. The younger you are, the less likely you’ll be able to fight off an HBV infection — 90 percent of infants infected with HBV will develop chronic infections, and 25 percent of them will go on to die prematurely after developing liver disease. Compare that to 2 to 6 percent of infected adults who will develop chronic infections.


Because infants are so vulnerable to developing chronic infections, vaccinating them against hepatitis B at birth makes sense.


Most people think of hepatitis as a bloodborne disease, and it is spread very efficiently when IV drug users share needles, during needle-stick accidents and other occupational injuries, or by using contaminated piercing needles, tattoo equipment, or acupuncture needles. Even sharing items like razors, toothbrushes, and nail clippers can do it, as the virus can survive outside of the human body for a week. HBV can also be spread by sexual contact, including vaginal and anal sex.

Lastly, babies and children can be at risk as the virus can be transmitted from mother to infant during birth, and during early childhood when risk of chronic infection is high. A significant number of people with chronic infections acquired them during early childhood, but we don’t know exactly how they got them, as their parents and other household contacts were negative for the virus or its antibodies. Since infants and children are at the highest risk for developing chronic infections, focusing on that population for prevention is very important.

Luckily, there’s a vaccine. Continue reading

STD Awareness: Which STDs Are Vaccine Preventable?

scientistWouldn’t it be great if we could wipe sexually transmitted diseases off the face of the earth? If vaccinologists have a big “to-do” list out there, probably every single infectious disease is on it, including every STD. But some STDs have a higher priority than others, while other pathogens, unfortunately, don’t yield to our efforts quite as easily as other vaccine-preventable diseases.

Celebrate National Immunization Awareness Month by taking a look at a vaccinologist’s hypothetical “to-do” list below. While we already have a couple of STDs checked off that list, there is still more progress to be made!

check boxHuman papillomavirus: Gardasil, the most widely used HPV vaccine, introduced a new-and-improved version earlier this year. Gardasil 9 protects against seven strains of HPV that collectively cause 90 percent of cervical cancers and anal cancers, plus the two HPV strains that are jointly responsible for 90 percent of genital warts. Not only that, but vaccination against HPV will also reduce the frequency of “pre-cancers,” which are cellular abnormalities that can be treated before progressing into full-fledged cancer — meaning less time, money, and anxiety spent dealing with follow-up procedures and treatments. In fact, Australia is already seeing a huge nosedive in genital warts and pre-cancers — all thanks to their sky-high HPV vaccination rates.

check boxHepatitis A and B: Hepatitis, a disease of the liver, can be caused by several types of viruses, including hepatitis A virus and hepatitis B virus. Both can be transmitted sexually, but thanks to the vaccines, you can ask to be protected against them using a combination vaccine, meaning you’ll only have to get three shots over a six-month period rather than the five shots you’d receive if you were vaccinated for the two viruses separately. Continue reading

National Breastfeeding Month: A Glimpse Into My Breastfeeding Journey

The following guest post comes to us via Cynthia.

breastfeedingBreastfeeding is the most natural, rewarding, challenging, frustrating, amazing, and empowering thing I have ever done. While I was in my second trimester of pregnancy, I was starting to make all kinds of decisions about how I wanted to care for my baby, including diapers, daycare, pediatrician, and breastfeeding. After doing the research and talking to other women about breastfeeding, I decided it was the best decision for me. There are amazing benefits.


I was referred to a lactation consultant. I called this woman my fairy milk mother.


In fact, there are so many great benefits the American Academy of Pediatrics (AAP) has a health initiative around breastfeeding and recommends that babies be breastfed through 6 months of age. A breastfed baby gets a nutritional superfood (to use a popular phrase) that is so dense with beneficial vitamins, minerals, and fats that the list of ingredients is long enough to fill several sheets of paper (women’s bodies are pretty spectacular).

Breast milk is powerful stuff, too. Studies show that breast milk will boost the immune system of the baby and benefit the mother’s health as well, in addition to reducing her chance of breast cancer. Additionally, breastfeeding reduces the rate of SIDS (sudden infant death syndrome) and future obesity for infants as they go into childhood and adulthood. Oh, and breastfeeding helps a mom shed her pregnancy pounds quicker — bonus!

Breastfeeding also provides the opportunity to bond with a baby in a close and personal way (the AAP makes note of this benefit too). My favorite times were when I could sit with my son on my lap and just relax. I didn’t do anything else but touch his soft baby skin, look at his toes and fingers, store in my memory the chubby cheeks, little nose, and rosebud lips, and lovingly stroked his back and legs. Thinking about it now, the sweet scent of my little one comes back to me. There is never another moment like when a child is an infant. Soon they will be crawling, walking, and then running. And that close time does wonders for a baby, providing reassurance, confidence, and a closeness that lasts beyond infancy. Continue reading

STD Awareness: Do Sexually Transmitted Diseases Increase HIV Risk?

virion HIVYou might have heard that having an STD like syphilis, herpes, or gonorrhea can make it easier to catch HIV, the virus that causes AIDS. But have you ever wondered if this was true? Maybe it’s just a simple correlation — for example, someone who doesn’t practice safer sex would be more likely to catch HIV along with any other STD. That doesn’t mean that one causes the other, does it?


Common STDs like herpes and trichomoniasis can increase HIV risk.


But it’s not a mere correlation. If you take one person with an STD and one person without an STD and expose them both to HIV through sexual contact, the person with the STD will be at least two to five times more likely to become infected with HIV. Why is that? First, many STDs can make you more susceptible to an HIV infection. Second, the immune response triggered by many sexually transmitted infections can summon the types of immune cells that HIV targets.

Furthermore, if a person with HIV is co-infected with another STD, he or she is more likely to transmit HIV to a partner. In other words, STDs can make a person with HIV more infectious. HIV is more likely to appear in their genital secretions, making it easier to transmit HIV through sexual activity. Continue reading