LONDON (Reuters) - Global share markets and oil fell on Monday, safe-haven gold surged and U.S. Treasury yields reached their lowest since mid- 2016, as coronavirus cases spread outside China, darkening the outlook for world growth.Europe took a beating early on, with Italy plunging more than 4% after a spike in cases of the virus left parts of the country's industrial north in virtual lockdown. [.EU] That put Milan on course for its worst day since 2016.Frankfurt and Paris were both down more..