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Table 1 MLVA-8 Orsay data and comparison of PFGE, MLST and MLVA discriminatory power in endemic and epidemic Acinetobacter baumannii PFGE types

From: Endemic and epidemic Acinetobacter baumannii clones: a twelve-year study in a tertiary care hospital

MLVA locus or Genotyping technique

Repeat size (bp)

No. of repeats mode (no. of repeats range)

Alleles or no. of genotypes

HGDI a

CI (95%) b

Abaum_3530

60

6 (6 – 7)

2

0.502

(0.499, 0.508)

Abaum_3002

57

8 (7 – 8)

2

0.496

(0.482, 0.510)

Abaum_2240

99

4 (2 – 5)

3

0.345

(0.275, 0.415)

Abaum_1988

77-80

2 (2 – 3)

2

0.641

(0.617, 0.665)

Abaum_0826

9

13 (9 – 20)

9

0.833

(0.813, 0.853)

Abaum_0845

7

44 (2 – 44)

9

0.819

(0.795, 0.843)

Abaum_2396

6

12 (10 – 29)

9

0.807

(0.777, 0.837)

Abaum_3468

6

9 (8 – 11)

4

0.658

(0.625, 0.691)

PFGE

  

15

0.880

(0.858, 0.902)

MLST

  

4

0.655

(0.624, 0.686)

MLVA-8

  

17

0.883

(0.863, 0.903)

  1. aHunter-Gaston diversity index (HGDI) calculations were performed taking into account all 231 isolates in the studied 15 PFGE types, except for Abaum_0845 (N = 210), owing to the lack of amplification in EE14 and EE15.
  2. bHGDI 95% confidence interval.