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Volume 3, Number 3—September 1997

Dispatch

Using Laboratory-Based Surveillance Data for Prevention: An Algorithm for Detecting Salmonella Outbreaks

L. C. Hutwagner, E. K. Maloney, N. H. Bean, L. Slutsker, and S. M. Martin
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA

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Table 1

Number of flags produced for Salmonella serotype Enteritidis, 1993

State All Isolates
Three or more isolates
Five or more isolates
Mean
5 wks Mean
15 wks Median
5 wks Mean
5 wks Mean
15 wks Median
5 wks Mean
5 wks Mean
15 wks Median
5 wks
Alaska 3 3 3 0 0 0 0 0 0
Arizona 12 13 18 4 4 4 1 1 1
Arkansas 3 3 3 0 0 0 0 0 0
Colorado 21 23 35 13 13 15 1 1 1
Connecticut 12 13 31 11 12 26 9 10 21
Delaware 7 8 12 1 1 2 0 0 0
District of Columbia 4 4 8 1 1 1 0 0 0
Florida 15 15 15 1 1 1 1 1 1
Georgia 2 2 2 2 2 2 0 0 0
Hawaii 7 7 7 0 0 0 0 0 0
Idaho 12 12 14 0 0 0 0 0 0
Illinois 12 12 23 12 12 23 12 12 23
Indiana 22 22 33 14 14 17 7 7 8
Iowa 10 11 16 5 5 5 1 1 1
Kansas 12 12 16 1 1 1 1 1 1
Kentucky 10 10 13 0 0 0 0 0 0
Louisiana 16 17 18 7 7 7 0 0 0
Maryland 8 9 25 8 9 25 4 5 20
Massachusetts 5 5 9 5 5 9 5 5 9
Michigan 11 11 34 9 9 22 7 7 9
Minnesota 20 24 31 17 19 20 6 6 6
Missouri 17 19 30 5 5 6 1 1 1
Nevada 6 6 6 2 2 2 1 1 1
New Hampshire 19 22 23 3 3 3 0 0 0
New Jersey 7 7 25 7 7 25 7 7 24
New Mexico 14 14 17 7 7 7 4 4 4
New York 11 12 28 10 11 26 7 7 18
North Dakota 7 7 8 0 0 0 0 0 0
Ohio 11 13 25 10 12 19 7 8 11
Oklahoma 3 3 3 0 0 0 0 0 0
Oregon 16 17 21 4 4 4 0 0 0
Pennsylvania 1 1 1 1 1 1 1 1 1
Rhode Island 18 18 22 7 7 8 2 2 2
South Carolina 10 10 13 6 6 6 1 1 1
South Dakota 15 15 18 1 1 1 0 0 0
Tennessee 4 4 14 3 3 6 0 0 0
Texas 15 16 24 9 9 10 5 5 5
Utah 13 14 16 2 2 2 0 0 0
Vermont 28 29 30 15 15 16 9 9 10
Virginia 12 13 37 12 13 32 8 9 16
West Virginia 3 3 5 1 1 1 0 0 0
Wisconsin
14
15
31
14
14
25
13
13
15
Total 468 494 763 230 238 380 121 125 210

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