ContextTyping of Mycobacterium tuberculosis could provide a more sensitive means of
identifying outbreaks than use of conventional surveillance techniques alone. Variants of the
New York City W strain of M tuberculosis were identified in New Jersey. ObjectiveTo
describe the spread of the W family of M tuberculosis strains in New Jersey identified by
molecular typing and surveillance data. DesignPopulation-based cross-sectional study.
Setting and SubjectsAll incident culture-positive tuberculosis cases reported in New Jersey …