A massive health conference expecting 44,000 attendees — including a speech from President Donald Trump Monday —at the Orange County Convention Center has been canceled amid fears of coronavirus.The Healthcare Information and Management Systems Society conference announced the cancellation Thursday, days before it was due to kickoff Monday. It cited “industry understanding of the potential reach of the virus has changed significantly in the last 24 hours" which made assessing risk “impossible.” The society was also wary of displacing healthcare workers from around the world, should the virus continue spreading.