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Table 3 Distribution of phenotypic and genotypic characteristics among the 18 macrolide-resistant Streptococcus agalactiae isolates included in the present study

From: Streptococcus agalactiae in Brazil: serotype distribution, virulence determinants and antimicrobial susceptibility

Isolate

City of origina

Serotype

Phenotypeb

Genotypec

ermA

ermB

mefA

4676

Rio de Janeiro

Ia

iMLSB

+

-

-

4677

Rio de Janeiro

Ia

M

+

-

-

4583

Rio de Janeiro

NTd

cMLSB

-

+

-

4740

Rio de Janeiro

III

cMLSB

-

-

-

4714

Rio de Janeiro

II

cMLSB

-

-

-

4835

Rio de Janeiro

II

M

+

-

-

5008

Rio de Janeiro

III

cMLSB

-

+

-

4619

Rio de Janeiro

NTd

cMLSB

-

-

-

282

Rio de Janeiro

II

cMLSB

-

-

-

4971

Rio de Janeiro

Ia

cMLSB

-

+

-

907

Rio de Janeiro

II

cMLSB

-

-

-

1196

Rio de Janeiro

Ib

cMLSB

-

-

-

4501

Porto Alegre

III

M

+

-

-

4555

Porto Alegre

Ia

cMLSB

+

-

-

4732

Brasília

Ia

cMLSB

-

+

-

4736

Brasília

Ia

cMLSB

-

+

-

6717

Recife

V

iMLSB

+

-

-

8134

Manaus

Ib

cMLSB

+

-

-

  1. aRio de Janeiro is located in the Southeast region; Porto Alegre is located in the South region; Brasilia is located in the Mid-West; Recife is located in the Northeast and Manaus is located in the North region.
  2. bcMLSB: constitutive macrolide-lincosamide-streptogramin B resistance phenotype; iMLSB: inducible macrolide-lincosamide-streptogramin B resistance phenotype; M: macrolide resistance phenotype.
  3. c erm: erythromycin ribosome methylation; mef: macrolide efflux.
  4. dNT, nontypeable by using antisera against Ia, Ib, II-VIII serotypes.