Scientists in an Undisclosed location in the Alps made a critical breakthrough in how the infection spreads, this is a very critical piece of information, basically, the victim in question doesnt actually die before becoming infected, instead getting taken over by the virus, however the rot effect is because the virus does not know how to give commands to the internal areas of the body, and as such they stop working causing rot, while this does lead to the conclusion a cure is possible, it might not be all-round or even able to be used on all zombies simply due to rot state, but it is certainly news for future usage.