and discover all the different varieties of how it's manifested. Think a lot of people have completed the questionnaire & not been chosen to participate. I've had a few very mild symptoms but nothing I would have worried about. That's why I don't think it's a DNA stockpiling. Why would you only want people with symptoms? If nothing else it should give a more accurate picture all what kind of stats we're looking at. I'd be very surprised if I had it but got tagged for the challenge then after answering was chosen to be tested. Only 1 of the 3 people tagged got chosen and the same with the 3 I tagged (1 of 3).