If you have just been diagnosed with hepatitis B virus (HBV) then you need to understand how HBV is transmitted. This is important whether you have an acute or chronic infection. You must understand you are infectious at this time and can transmit the virus to others.
How is hepatitis B transmitted? Hepatitis B is transmitted through blood and infected body fluids. This can happen through direct blood-to-blood contact, unprotected sex, unsterile needles, medical or dental equipment, and from a HBV infected mother to her baby at birth. For kids, pediatric experts report that the fluid that oozes from cuts and open sores is also highly infectious. HBV can also be transmitted inadvertently by the sharing of personal items such as razors, toothbrushes, nail clippers, body jewelry and other personal items that may have trace amounts of blood on them.
HBV is not transmitted casually by sneezing or coughing, shaking hands or sharing or preparing a meal. In fact it is not contracted during most of life’s daily activities. Hugging or even kissing won’t cause infection unless there are bleeding gums or open sores during the exchange. It’s really all about trace amounts of infected blood, though the virus is in other bodily fluids in lower concentrations. For example, it’s not about the saliva on the toothbrush that is a big concern, but rather the potential for trace amounts of blood that could be exchanged with a shared toothbrush.
How did I get this? If you have been diagnosed with hepatitis B virus you are likely racking your brain trying to figure out how you could have gotten HBV. Some can immediately track their likely exposure to a recent event, or perhaps a time period in their life where they were more likely to have been exposed. They may fit into an at-risk category for hepatitis B due to lifestyle choices, country of origin, frequent travel and exposure in endemic areas of the world, high risk employment, or an unsafe blood transfusion, or medical or dental procedures performed without proper infection control.
Since HBV is a silent infection there can be years before it is detected. Many individuals born in endemic parts of the globe find out later in life that they are hepatitis B positive, even though they have likely had HBV since birth or early-childhood. Children are especially vulnerable to chronic HBV. 90% of babies and up to 50% of young children infected with HBV will remain chronically infected, and most will have no symptoms. Often it remains undetected until it is caught in routine blood work or later in life when there may be liver disease progression. In Asia, vertical transmission from mother to child is very common; whereas in Africa, horizontal transmission at a young age is often the reason.
Although not casually transmitted, there are inadvertent opportunities for exposure to hepatitis B. If you are from an area where HBV is very common, then the odds of exposure, transmission, and infection will be higher. If you do, or have participated in high-risk activities at some point in your life, you are also at greater risk. People are often quick to point out that they have never injected drugs or participated in more obvious high-risk activities, but let’s face it – multiple sex partners? Certainly sexual experimentation in college or early adulthood is not that unique. Things happen, people change, or sometimes they don’t. This isn’t a time for judging, it’s a reflection of what happened yesterday or 20 years ago that may have exposed you to HBV and resulted in infection. That being said, unless it happened just recently and you can definitively identify your exposure, I would advise that you let it go and move forward. I spent a number of years wondering about the details of my daughter’s infection, but ultimately, it really doesn’t matter.
Time to move forward.
The next step – preventing transmission to others, Part II