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Volume 12, Number 9—September 2006

Changing Pattern of Human Listeriosis, England and Wales, 2001–2004

Iain Gillespie*Comments to Author , Jim McLauchlin*, Kathie Grant*, Christine Little*, Vina Mithani*, Celia Penman*, Christopher Lane*, and Martyn Regan†
Author affiliations: *Health Protection Agency, London, United Kingdom; †Health Protection Agency North West, Liverpool, United Kingdom

Main Article

Table 1

Clusters of human listeriosis, England and Wales, 1990–2004*

Year Area No. cases Pregnancy associated Listeria monocytogenes type
Vehicles of infection
Serovar AFLP Phage PFGE
Clusters probably or likely to be common-source foodborne outbreaks
1999a NE England 4 0 4b ND ND ND Hospital sandwiches
2003 NE England 17 11 4b V A 2 Butter
2003 NE England 18 0 4b I G 1 None identified
2003 S Wales 2 0 1/2a XI Y L Hospital sandwiches
2003b SW England 5 5 1/2a III Y A Hospital sandwiches
2004 E Midlands 6 0 4b I ND E None identified
4b IV ND M None identified
4b V ND J None identified
2004 SE England 2 0 4b I ND A Hospital sandwiches
4b V ND B Not identified
Episodes of neonatal cross-infection
1990 SE England 2 2 4b ND ND ND Contact between patients within a delivery suite
1997 SE England 2 2 4b ND H ND Contact between patients within a delivery suite
1998 SE England 2 2 1/2a ND I ND Contact between patients within a delivery suite

*AFLP, amplified fragment-length polymorphism; PFGE, pulsed-field gel electrophoresis; NE, northeast; ND, not done; NT, nontypable; SW, southwest; SE, southeast. Two clusters have previously been described: a (15) and b (16).

Main Article

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