<span style="color: #222222;">Facebook has cancelled its annual F8 developers conference, the biggest annual event for the US tech giant, over fears about the possible spread of the novel coronavirus.&nbsp;<br />”<br />”The gathering in the Silicon Valley city of San Jose – which had been set for early May – typically draws thousands of software makers from around the world who collaborate with the tech giant on its platform.&nbsp;<br />”<br />”US public health officials confirmed a coronavirus case in Northern California, the first of unknown origin out of about 60 cases, and have told Americans to be ready to cancel mass gatherings and work from home.<br />”<br />”Both Facebook and Microsoft said that they were withdrawing from the Game Developers Conference in San Francisco set for March.</span>