Feature Article: 3 Misconceptions About the Hepatitis Outbreak in Children
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Parents PACKIn late April 2022, several cases of hepatitis of unknown cause were reported in children in the U.S. and several other countries. Investigations into these, and additional cases, are currently underway.
Hepatitis is a medical term used to describe inflammation of the liver. However, because some viruses include the word “hepatitis” in their name, it is easy to be confused. So, let’s take a closer look at what hepatitis is, discuss why these cases are causing concern, and address some misconceptions related to the situation.
Hepatitis is a term used by healthcare providers to describe inflammation of the liver. Typically, an inflamed liver is not functioning properly, leading to symptoms like nausea or vomiting, pain, dark urine, light-colored bowel movements or diarrhea, joint pain, or yellowing of the skin or the whites of the eyes (called jaundice). However, not everyone with hepatitis experiences symptoms, making it difficult in some cases to know that a person’s liver is under stress.
Hepatitis can be caused by several viruses. Hepatitis A, hepatitis B, and hepatitis C may come to mind when one thinks about liver infections (perhaps even the less commonly known, hepatitis D and hepatitis E), but hepatitis can result from a variety of causes, including:
The condition can be short-lived or chronic, meaning it does not resolve and eventually can lead to liver disease or liver cancer, such as can occur with hepatitis B infections.
The recent cases of hepatitis in children are alarming for a few reasons:
Investigations into the causes are ongoing in several countries, including the U.S.
When we don’t know why something is happening, we try to figure it out. Often, we do this by looking for patterns, such as what the child was doing before developing symptoms. It is human nature to do this, and it is an important part of the process of finding answers. Unfortunately, this same process can result in misunderstanding or confusion as people share ideas, especially in today’s connected world. As such, we wanted to address three ideas about this situation that are unlikely or unfounded, but which have spread, causing fear and confusion.
While it is likely that children have less immunity against certain viruses, like adenovirus, because of lack of exposure during the pandemic, that is different than having a weakened immune system. The immune system is robust, and it works all day every day — the same as our heart, lungs and their associated systems. The things we touch are not sterile. The food we eat is not sterile, and the air we breathe is not sterile. This means that our immune systems work 24/7 regardless of whether we are in our homes and away from others or going about our usual business. As such, even while increased numbers of contagious infections may be likely, increased severity of infections should not be assumed. For example, adenovirus infections are generally a nuisance, but for most people they are not deadly, so if an adenovirus is found to be the cause, we will need to understand why we are seeing the increased severity. As described above, it could be that the virus has changed. Alternatively, if the number of severe cases is significantly higher, that could result in an increase in severe outcomes. However, that would not provide evidence that our immune systems were weakened by the social distancing and other public health measures instituted to save lives during the pandemic.
Because of confusion about use of the word “hepatitis,” some have suggested that this situation offers evidence that the hepatitis B vaccine does not work. However, as described above, hepatitis B is one of many pathogens that can cause hepatitis. To date, none of the affected children were found to have infections caused by any of the same-named viruses (hepatitis A, B, C, D or E). As such, the situation does not offer evidence that either the hepatitis A or hepatitis B vaccine is ineffective.
Some have confused the adenovirus discussed in relation to this situation (type 41) and the adenovirus vectors used in some COVID-19 vaccines (types 5 and 26). In addition to being different types of adenovirus, the COVID-19 vaccines made using adenovirus vector viruses (J&J/Janssen and AstraZeneca) are not approved for use in people younger than 18 years of age. The children experiencing hepatitis are 16 years of age and younger.
Finding the cause of these cases of hepatitis is important, particularly as we witness children becoming so ill that they require hospitalization and, in some cases, surgical intervention in the form of a liver transplant. And, sadly, a few children have died. However, it is also important that we critically analyze what we know about the situation, so that we are not overcome with fear or misinformed by ill-founded ideas circulating on the internet.
To stay abreast of the situation, monitor several sources of information to see what they are reporting, or check primary sources, such as the World Health Organization or the Centers for Disease Control and Prevention.
If you have questions specific to your child, contact your child’s doctor. If you are concerned that your child may be displaying symptoms of hepatitis, contact your child’s doctor or seek emergency medical treatment if needed.
Categories: Parents PACK June 2022, Feature Article
Materials in this section are updated as new information and vaccines become available. The Vaccine Education Center staff regularly reviews materials for accuracy.
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