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Enterovirus As Trigger for Type 1 Diabetes

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Enteroviruses are widespread, second only to the common cold rhinoviruses. The major groups are poliovirus, cocksackievirus, and echovirus. There are over 60 non-polio enteroviruses that infect humans. Most infected individuals have no symptoms, but these infections can mimic colds and flu with respiratory symptoms. In rare cases, they cause meningitis, encephalitis, or myocarditis. Summer and fall are the most likely times to develop enterovirus infections, which can affect anyone but are more common in children.

Type 1 diabetes has been on the rise worldwide in recent decades, especially in children younger than 5 years. The average annual increase in Europe was 3.9 percent during the time period 1989 – 2003. This is too rapid to be caused by genetic factors alone, so researchers have looked for an environmental trigger. Geographic and seasonal patterns suggest a viral infection as a trigger for the autoimmune process. Viral infections are suspected as triggers in many autoimmune illnesses.

Many studies have linked enterovirus infection with type 1 diabetes. The first was published in 1969. Cocksackievirus B-4 is the most widely studied. However, the results of different studies have been contradictory. A systematic review and meta-analysis indicated that overall, there is a clinically significant association between enterovirus infection and type 1 diabetes.

The review included 24 papers and two abstracts, covering a total of 4,448 participants. All were case-control studies, which means that individuals with type 1 diabetes were compared with matched controls. The diabetes subjects were almost 10 times more likely to have enterovirus infection, as confirmed by molecular RNA studies, as the matched controls.

Enterovirus vaccines are in clinical trials for both children and adults. Vaccines have eliminated polioviruses from the Western hemisphere, so there is a possibility for non-polio enteroviruses to be eliminated as well.

The annual cost of treating diabetes type 1 in the United States is estimated at $14.4 billion. This is disproportionately more expensive than type 2.

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We value and respect our HERWriters' experiences, but everyone is different. Many of our writers are speaking from personal experience, and what's worked for them may not work for you. Their articles are not a substitute for medical advice, although we hope you can gain knowledge from their insight.

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