Listeriosis is a food-associated disease.
This approach may be especially valuable for diseases such as listeriosis where well but susceptible controls can be difficult to enrol.
The epidemiology of listeriosis is only partially understood particularly in countries where the disease is not notifiable.
We performed a nationwide surveillance study of listeriosis.
Following an improvement in local food production conditions, the number of culture-confirmed cases of listeriosis fell to only two in 1998.
Molecular typing methods are widely used to supplement more established typing methods such as phage and serotyping and to support epidemiological investigations of listeriosis.
The clinical features of this outbreak were consistent with gastrointestinal listeriosis.
To estimate the annual number of cases and the incidence of listeriosis we examined the data of 95 cases from 56 hospitals in 1996 -2002.
