I'm interested to know whether any of you guys have made your own SR4 infection rules or not. The Shadowrun Companion 3rd Ed rules are OK but I'm not sure how they'll actually transpose to SR4
For a start I've considered that the raw body vs essence roll would be an opposed test between the two characters as opposed to (how I understand it) using the essence score as a TN. I'm not sure whether there are additional considerations or not.
From there, I have the necessary stat changes from another thread along a similar line which didn't actually touch on accidental infection, just from starting characters as Ghouls.
Cheers