In 2009, 97 cases of listeriosis were reported in Denmark (1.8 per 100,000), a significant rise over the previous year. The increase was seen both in cases of bacteraemia and meningitis and affected mainly people aged 70 years and older. A foodborne outbreak of eight cases was identified by pulsed-field gel electrophoresis typing. No explanation has so far been found for the marked increase in incidence. An increasing trend has been observed since 2003 and possible explanations are discussed.
Eurosurveillance (online Edition), 2010, Vol 15, Issue 12, p. 952-69
Adolescent; Adult; Age Distribution; Aged; Aged, 80 and over; Child; Child, Preschool; Communicable Diseases, Emerging; Denmark; Disease Outbreaks; Female; Humans; Incidence; Infant; Infant, Newborn; Listeriosis; Male; Middle Aged; Population Surveillance; Risk Assessment; Risk Factors; Sex Distribution; Young Adult