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Volume 28, Number 1—January 2022

New Sequence Types and Antimicrobial Drug–Resistant Strains of Streptococcus suis in Diseased Pigs, Italy, 2017–2019

Lucilla Cucco, Marta Paniccià, Francesca Romana Massacci, Alessandra Morelli, Massimo Ancora, Iolanda Mangone, Adriano Di Pasquale, Andrea Luppi, Denis Vio, Cesare Cammà, and Chiara Francesca MagistraliComments to Author 
Author affiliations: Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche ‘Togo Rosati,’ Perugia, Italy (L. Cucco, M. Paniccià, F.R. Massacci, A. Morelli, C.F. Magistrali); Istituto Zooprofilattico Sperimentale di Abruzzo e Molise ‘Giuseppe Caporale,’ Teramo, Italy (M. Ancora, I. Mangone, A. Di Pasquale, C. Cammà); Istituto Zooprofilattico Sperimentale della Lombardia e della Emilia-Romagna ‘Bruno Ubertini,’ Brescia, Italy (A. Luppi); Istituto Zooprofilattico Sperimentale delle Venezie, Padova, Italy (D. Vio)

Main Article

Table 3

Antimicrobial resistance genes identified in the 78 Streptococcus suis isolates from diseased pigs, Italy, 2017–2019, by sequence type

Antimicrobial resistance genes Sequence type
ST1 ST123 ST1547 ST29 ST7 ST16 ST94 ST1540 Other*
ermb, tet(O) 11 15 3 3 8 3 1 2 46
tet(O) 1 4 1 6
None 1 1 3 5
Cv ermb, tet(O), dfr(F) 5 5
aac6-aph2, ant6-ia, aph3-iiia, spw, ermb, tet(40), tet(W), tet(O), tet(O/W/32/O), tet (W/N/N) 3 1 4
tet(M) 1 1
ermb, tet(M) 1 1
ermb, tet(W), tet (O/W/32/O), tet(W/N/N) 1 1
ant6ia,aadE, ermb, tet(O) 1 1
aac6-aph2 1 1
ant6ia, aph3-iiia, spw, cat 1 1
ant6ia, aph3-iiia, apmA, ermb. optrA, tet(40), spw 1 1
aac6-aph2, ermb, tet(O) 1 1
ant6-ia, aadE, ermb, tet(W), tet(O), tet(O/W/32/O), tet(W/N/N) 1 1
ant6-ia,aadE, ermb, tet(40), tet(O), tet(O/32/O) 1 1
ant6-ia, spw, lnuB, lsaE, tet(O) 1 1
aac-aph2, aad(6), spw, ermb, erm(47), lnuB, lsaE, tet(40), tet(T)


Total 17 17 7 6 9 3 3 3 13 78

*Sequence types (STs) represented by <3 isolates.

Main Article

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