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Volume 16, Number 2—February 2010

Research

Imported Methicillin-Resistant Staphylococcus aureus, Sweden

Mikael StenhemComments to Author , Åke Örtqvist, Håkan Ringberg, Leif Larsson, Barbro Olsson-Liljequist, Sara Hæggman, Mats Kalin, and Karl Ekdahl
Author affiliations: Swedish Institute for Infectious Disease Control, Solna, Sweden (M. Stenhem, B. Olsson-Liljequist, S. Hæggman); Karolinska Institutet, Solna (M. Stenhem, Å. Örtqvist, M. Kalin, K. Ekdahl); County Medical Office Communicable Disease Control, Stockholm, Sweden (Å. Örtqvist); Regional Centre for Communicable Disease Control and Prevention, Malmö, Sweden (H. Ringberg); Sahlgrenska University Hospital, Göteborg, Sweden (L. Larsson); European Centre for Disease Prevention and Control, Solna (K. Ekdahl)

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Table 2

Imported cases of MRSA acquisition and disease among immigrants, Sweden, 2000–2003*

Country of origin No. immigrants† No. with MRSA acquisition
(no. with MRSA disease) Risk/100,000 immigrants (95% CI)
Malta 21 1 (0) 4,761.9 (120.5–23,816.0)
Kazakhstan 933 4 (2) 428.7 (116.9–1,094.0)
South Africa 556 2 (1) 359.7 (43.6–1,293.3)
Sudan 360 1 (1) 277.8 (7.0–1,537.9)
Italy 1,382 2 (1) 144.7 (17.5–521.8)
Ecuador 995 1 (1) 100.5 (2.5–558.6)
Lebanon 2,100 2 (0) 95.2 (11.5–343.6)
Mongolia 1,055 1 (1) 94.8 (2.4–527.0)
Japan 1,274 1 (0) 78.5 (2.0–436.6)
The Philippines 1,335 1 (1) 74.9 (1.9–416.6)
Afghanistan 6,166 4 (3) 64.9 (17.7–166.0)
United States 4,094 2 (0) 48.9 (5.9–176.4)
Former Yugoslavia 45,587 20 (10) 43.8 (26.8–67.8)
Germany 6,564 2 (0) 30.5 (3.7–110.0)
Poland 3,658 1 (0) 27.3 (0.7–152.2)
Iran 7,856 2 (1) 25.5 (3.1–91.9)
Thailand 4,883 1 (0) 20.5 (0.5–114.0)
United Kingdom 5,306 1 (0) 18.9 (0.47.7–105.0)
Turkey 5,568 1 (1) 18.0 (0.5–100.0)
Russia 8,254 1 (0) 12.1 (0.3–67.5)
Somalia 8,546 1 (1) 11.7 (0.3–65.2)
Iraq 43,730 4 (3) 9.1 (2.5–23.4)
Other countries 191,302 0
Total 351,525 56 (27) 15.9 (12.0–20.7)

*MRSA, methicillin-resistant Staphylococcus aureus; CI, confidence interval.
†Included in the immigration figures were persons who received a residence permit because of family ties, European Economic Area convention, and labor permits; visiting students; and asylum seekers per country of citizenship.

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