Actually I agree with Racedo; clever advertising ploy has been used by the government propaganda machine here. You will have heard the same technique used when, for example, advertising toothpaste - "Acme toothpaste reduces cavities by up to 50%". That actually means that it could reduce fillings but not by more than 50%. It could reduce them by virtually nothing - say 0.000001% and it would be a lie. One thing is for sure the ploy as been proven to work, since the media quite readily parrot out the 70% without the "up to" readily, and if something is repeated often enough people will believe it.
At the same time I also agree that travel, any travel, domestic or overseas is probably not sensible at this time for a myriad reasons. Leave it until March / April and things should be better.