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Table 3 Overview of published chocolate outbreaks due to Salmonella contamination

From: International outbreak of SalmonellaOranienburg due to German chocolate

Year Country Serovar Vehicle* Source of contamination cfu/g No. of affected persons Peak of outbreak Age of
cases
1970 Sweden S. Durham Chocolate
products
(n>1),
Cocoa powder / 110 Dec-May 53% ≤15 years
1973 – 1974 USA, Canada S. Eastbourne Chocolate balls
from Canada
Cocoa beans 2.5 200 Dec-Feb. 3 years
(median)
1982 England,
Wales
S. Napoli Chocolate bars
from Italy
Unknown 2–23 272 May-Aug 58% ≤ 15 years
1985 – 1986 Canada S. Nima Chocolate coins
from Belgium
Unknown / / Dec-Jan ?
1987 Norway,
Finland
S. Typhimurium Chocolate
products,
(n = 3) from
Norway
Avian
contamination speculated
≤1 349 Mar-May 6 years
(median)
2001– 2002 Germany,
other European
countries
S. Oranienburg Two chocolate
brands from
Germany
Unknown 1.1–2.8 439 Oct-Dec 15 years
(median)
  1. * In each outbreak, the identified vehicles were traced to a single manufacturer