In 1984, the CDSC merged with the PHLS Epidemiological Research Laboratory, expanding its functions to include research on vaccine-preventable diseases. Linked evidence PHEN0001261 - A review of the work of the Public Health Laboratory Service PHLS Communicable Disease Surveillance Centre January 1986 - 01 Jan 1986 Chronology Information Date: 1 January 1984 Chapter/issue Public Health