Your other fish "should" be ok, providing you have no other type's of Tetra's. Whilst I haven't been able to find anything difinitive on whether or not it can cross tetra species, I've definately found nothing indicating that it can cross to other species.
With regard to Wilder's list of symptoms, these are correct however, your fish may not display all of these symptoms, you may only have one or two.
I have had one die so far from it (they all have it to varying degrees) as far as symptoms, it had a small white irregular shaped blotch on one of the tail flukes, the red and blue stripes were dull in comparison to the other healthier ones and the silver area above the red & blue had turned grey. No other symptoms and it was still schooling with the other 7 until it died somtime Monday night/Tuesday. I do however have another one that is still going well with the symptoms I just listed along with white irregular lumps on one side of it's body and what looks to be scales sticking up on the other side of it's body, I have to say that I thought that this would be the one that died first as it "appears" to be the sickest, but it is still eating well and schooling with the group.