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Table 2 United States and Canada GBS Seroprevalences Relative to Madigan Distribution

From: Group B streptococcusserotype prevalence in reproductive-age women at a tertiary care military medical center relative to global serotype distribution

       

Prevalence by Serotype (%)

 

Location

Study Interval

Patient Population

Typing method

total # patients

% GBS+

# Total Iso-lates

Iaa

Ib

II

III

IV

V

VI

VII

VIII

NT

Ref

WA (Madigan)

2010

Women

PCR

1129

18.3

207

29

12

12

27

2

17

1

0

0

1

this study

Canada Alberta

1998-2000

Gravidas

OID

NA

NA

118

20

9

9

15

0

28

  

0

20

[15]

Canada Calgary

1998-2000

Gravidas

OID

1207

19.5

235

23

11

13

21

2

19

  

0.4

11

[15]

MA Boston

1999

>94% Women

ELISA

NA

NA

114

25

5

10

24

0

32

0

 

0.9

4

[23]

MA Boston

1962-1963

>90% Women

ELISA

NA

NA

149

46

14

11

22

 

0

  

0

7

[23]

MI

1997-2000

Adults

DB

NA

NA

338

21

12

13

13

1

22

2

0

0.3

12

[20]

MI

1999-2000

Gravidas

LCP

NA

NA

117

18

11

11

19

1

20

2

  

17

[19]

MIc

1999-2000

92% Adults

DB

NA

NA

306

23

12

14

11

3

30

3

0.7

2

1

[12]

MN

1974- 1975

3rd Trimester Gravidas

CP

802

5.6

45

26

13

24

24

     

13

[17]

MN

1993-1999

Adults

NA

NA

NA

138

21

14

16

5

0.7

35

   

9

[24]

OH

2001-2002

Gravidas, urine cultures

LCP

65

2.8

2318

23

4

4

32

2

6

   

30

[21]

OH

2003

  

NA

NA

349

18

9

11

17

 

27

    

[14]

PA Pittsburgh

1993-2002

non pregnant women

IP

NA

NA

2660

34

11

13

25

0.4

15

0.3

0

0.3

2

[16]

PA Pittsburgh

1998-2000

non pregnant women

DB

NA

NA

177b

31

9

15

28

0.6

14

   

3

[22, 26]

TX

1994-1995

Gravidas

AS

546

28

153

24

9

26

24

0

12

   

4

[18]

WA, TX Seattle; Houston

1992-1995

Gravidas

ID

3307

26

856

26

8

18

21

0

21

0.2

  

1

[13]

WV

1999

Females

LA

NA

NA

84

19

13

9

15

4

15

   

9

[25]

  1. a--Ic from earlier studies is grouped with Ia
  2. b--of 270 GBS+ patients, 177 were serotyped
  3. c--mixed population: 267 adults - Michigan, 24 neonates - Houston, TX
  4. Madigan-Madigan Healthcare System, Tacoma, WA
  5. LCP-Lancefield capillary precipitin
  6. OID-Ouchterlony immunodiffusion
  7. DBC-dotblot capsular typing
  8. ID-immunodiffusion with rabbit antisera
  9. IP-immunoprecipitation in agarose
  10. LA-latex agglutination with serotype specific sera
  11. NA-not available
  12. AS-antisera
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BMC Infectious Diseases

ISSN: 1471-2334

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