Board Thread:Metal Gear Solid V/@comment-42.2.187.80-20150911172559/@comment-6747658-20151001185905

Zero visited Big Boss at the hospital he was in, that was not over the phone and it can also be taken that it was a while after he got infected. There is nothing to suggest that Zero got the English strain, absolutely nothing.

Also, the virus pretty much activates once said language is spoken, this was commented upon again and again and the reason for the whole Quarantine part. As for Zero, he clearly did not have the English strain because it would have killed him, instead whatever he was infected with degradeded his health and ultimately forced him into a coma.