The business media group, which publishes Health Service Journal and Nursing Times, was looking to expand its share of the UK healthcare conferences and exhibitions sector.
Conference Worldwide, established in 2003 and trading as Health Care Conferences (HCC), is one of the fastest-growing agencies in the sector. Its annual events programme includes Primary Care Live at the Harrogate International Centre and Managing Long-Term Conditions, which is held at Excel London and Manchester Central.
The deal was brokered by Tfconnect and Media Mergers.
Media Mergers managing director Martin Wright said Conference Worldwide had generated significant interest from potential buyers but Emap had submitted the highest bid.
"We approached a number of targets and there was a very good response in the marketplace," he said. "Not only is healthcare one sector that hasn't really been affected by the recession, but Conference Worldwide is a successful and profitable company.
"There's an obvious connection between Emap and Conference Care and the plans are now to grow the business."