It would depend on how the virus is spread. Is it spread airborne/contact or the usual "bite"? If it's an airborne virus: My F'n bike will be next to me and I will be riding top speed waaay out into the country. If it's contact; spear/trident something with a little range to keep distance. If it's bites; that would depend on the zombies mobility. Either A) night of the living dead - slow moving zombies. A hatchet/katana would be choice. B) 28 days later - super fast and aggressive. Long and very sharp katana