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Volume 7, Number 6—December 2001

Research

Reduced Fluoroquinolone Susceptibility in Salmonella enterica Serotypes in Travelers Returning from Southeast Asia

Antti Hakanen*†Comments to Author , Pirkko Kotilainen†, Pentti Huovinen*, Hans Helenius‡, and Anja Siitonen§
Author affiliations: *National Public Health Institute, Turku, Finland;; †Turku University Central Hospital, Turku, Finland;; ‡Turku University, Turku, Finland;; §National Public Health Institute, Helsinki, Finland

Main Article

Table 2

Number and source of 629 Salmonella isolates from Finnish travelers and the annual numbers of isolates with reduced ciprofloxacin susceptibility (MIC >0.125 µg/mL), 1995 to 1999

Isolates with reduced ciprofloxacin susceptibility
Yeara
Geographic area All isolates 1995 (102) 1996 (216) 1997 (107) 1998 (102) 1999 (102) Total (% of all isolates) p valueb
Africa 86 0 0 2 2 0 4 (4.7) 0.144
America 27 0 0 0 0 1 1 (3.7) 0.132
Asia 292 3 6 8 14 18 49 (16.8) <0.001
Southeast Asia 147 1 1 6 10 18 36 (24.5) <0.001
Middle East 93 2 5 1 2 0 10 (10.8) 0.706
Other areas 52 0 0 1 2 0 3 (5.8) 0.119
Europe 222 1 4 1 0 5 11 (5.0) 0.079
Mediterranean area 78 1 2 1 0 1 5 (6.4) 0.801
Canary Islands 60 0 1 0 0 3 4 (6.7) 0.147
Other parts 84 0 1 0 0 1 2 (2.4) 0.205
Total 629c,d 4c 10c 11c 17c,e 24c 66c,e (10.5) <0.001

aThe annual numbers of all isolates from Finnish travelers studied in parentheses.
bThe differences between years were modeled as a trend over years in these analyses. p value shows the statistical significance of this trend.
cSum of the numbers written in bold.
dTwo isolates of unknown origin included.
eOne isolate of unknown origin included.

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