I have some dazzlaire yarn I bought many years ago. It is not antron but creslan. In Caddisflies La Fontaine makes it clear that this material will work for his sparkle pupa patterns but he uses and recommends antron yarn. Later changes in the availability of the two may have led him to change his mind. On the label the yarn is only identified as acrylic but I remember the more complete description on the store shelf identified it as creslan.
I can think of few acts more selfish than refusing a vaccination.