Here's a good quote from the link best123 posted


Mercury is a very strong immunosuppressant, and its presence in the body may mask inflammatory Lyme Disease symptoms. Lyme Disease patients may actually feel that their Lyme Disease symptoms are better when they are mercury-poisoned because the inflammatory response to Lyme Disease is reduced. When mercury is removed from the body, an individual may experience increased Lyme Disease symptoms and herx reactions because the immune system has begun to function properly again.