Talk:Damage 2.0/@comment-184.175.26.45-20150301193319/@comment-212.41.87.105-20150303223928

After a Viral proc the halved health is now their full health bar. Don't damage them until the proc wears off (and the health bar reverts to its original state), and you'll see that your enemy has in fact lost half its health.

You can even test this on yourself btw. Just let yourself get hit by a Grineer Powerfist until they proc Viral (make sure they are only able to damage your shields). Your full health bar now shows half its original value until the debuff wears off.