There is no doubt that as one digs deeper into this disease it is extensive. However, like other infections there are many co-infections that need to be evaluated, and need to be dealt with for better health.
Below is a link of an article written by Dr. James Howenstine. He has written other articles that I've posted on parasite infections. In the below article Dr. Howenstine talks about how this infection can possibly spreads from person to person.