Table 2

Geographic distribution and genotyping results of Coxiella burnetii DNA from commercial milk samples
Bottling state Samples Animal source ST20a Possible ST20b ST8c Unable to genotyped IS1111 negative
Alabama 1 Bovine 1 0 0 0 0
Alaska 2 Bovine 0 0 0 0 2
Arizona 8 Bovine 7 1 0 0 0
Arkansas 3 Bovine 1 0 0 2 0
California 4 Bovine 4 0 0 0 0
Colorado 3 Bovine 3 0 0 0 0
Connecticut 3 Bovine 3 0 0 0 0
Florida 10 Bovine 10 0 0 0 0
Georgia 3 Bovine 3 0 0 0 0
Hawaii 1 Bovine 1 0 0 0 0
Idaho 2 Bovine 1 0 0 0 1
Illinois 1 Bovine 1 0 0 0 0
Indiana 4 Bovine 3 0 0 1 0
Iowa 1 Bovine 0 0 0 1 0
Kansas 3 Bovine 2 1 0 0 0
Kentucky 2 Bovine 2 0 0 0 0
Louisiana 3 Bovine 1 0 0 1 1
Maine 5 Bovine 3 0 0 2 0
Maryland 4 Bovine 3 0 0 0 1
Massachusetts 1 Bovine 1 0 0 0 0
Michigan 4 Bovine 4 0 0 0 0
Minnesota 5 Bovine 4 1 0 0 0
Nevada 1 Bovine 1 0 0 0 0
New Hampshire 2 Bovine 2 0 0 0 0
New Jersey 2 Bovine 2 0 0 0 0
New Mexico 5 Bovine 4 0 0 1 0
New York 3 Bovine 2 1 0 0 0
North Carolina 1 Bovine 1 0 0 0 0
North Dakota 1 Bovine 1 0 0 0 0
Ohio 1 Bovine 0 0 0 0 1
Oklahoma 6 Bovine 5 1 0 0 0
Oregon 8 Bovine 7 1 0 0 0
Pennsylvania 2 Bovine 1 1 0 0 0
Pennsylvania 1 Caprine 0 0 1 0 0
Tennessee 1 Bovine 1 0 0 0 0
Texas 12 Bovine 6 1 0 5 0
Utah 2 Bovine 1 0 0 1 0
Vermont 3 Bovine 2 1 0 0 0
Virginia 3 Bovine 3 0 0 0 0
Washington 3 Bovine 2 0 0 1 0
Wisconsin 2 Bovine 2 0 0 0 0
Unknown USA 2 Bovine 2 0 0 0 0
TOTAL 134 103 9 1 15 6

aSamples genotyped as allele G at locus Cox56bp10. This locus is specific to ST20 where allele G indicates ST20 and allele A excludes ST20.

bSamples failed to be genotyped with the ST20 specific locus Cox56bp10, likely due to low levels of DNA. However, other loci were used to determine groups of likely sequence types and ST20 was not able to be excluded.

cSamples genotyped as allele C at locus Cox51bp67. This locus is specific to sequence type 8 where allele C indicates ST8 and allele T excludes ST8.

dAll SNP assays failed to amplify either allele.

Pearson et al.

Pearson et al. BMC Microbiology 2014 14:41   doi:10.1186/1471-2180-14-41

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