a little riddle

[xal951]

Heres a short riddle for youll to figure out

I'll make you see red,
And I could scar you for life,
But because I'm so super,
If you dont get rid of me,
You could be "Gone with the Wind"

2 word answer

[xal951]

heres another

My first is in capsule
My second is in toxin
My third is in antibody
My fourth is in complement
My fifth is in growth
And i have an infectous effect on you - who am I?