§ Mr. Hinchliffe
To ask the Secretary of State for Health if, in any of the notified cases of listeriosis in 1987 and 1988, there was any evidence of a vector other than food.
§ Mr. Freeman
Three of the 546 listeria cases reported to the public health laboratory service in 1987 and 1988 were microbiologically confirmed as being food associated. No vector was identified in the other cases.