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3. Virus
There are a lot of health concerns that can trigger an autoimmune disease, one of the usual causes is a viral infection. When the body suspects the presence of a harmful virus, its immune system goes into a fight mode to combat or eliminate these viruses.
If this happens to a person who has an existing autoimmune disease, instead of attacking the viruses, the immune system attacks healthy cells resulting in the activation of the autoimmune disease. The good news is, viral infections can be prevented by doing simple precautions such as following good hygiene.
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