Here is background information about the published issues.
I'm sorry to post a link which is so clearly 'green-biased,' but many other more neutral sites - except the vinyl manufacturers - also refer to the safety issues discussed here. Though not in such extreme.
Vinyl Exam: Eliminating PVC in Your Home — Washington Toxics Coaltion
The issues have to do with off-gassing during manufacture of the vinyl material, and off-gassing through the life of the product itself, and toxicity of gasses from the material when it burns.
I have found nothing from the manufactures which out-and-out deny these statements. Or even to diminsh them. But on the other hand, if the material were so toxic, the government would have it banned.
So that's why I am asking. Vinyl is significantly less expensive and more durable than many other materials. I just want to know opinions from other folks.
Thanks.