Table 1.

Groups of VanA elements recognized among 107 enterococci of diverse origins using 10 primer pairs derived from the sequence of the prototype element, Tn1546

GroupPCR product with the following primer paira:No. of isolates
p1p2p3p4p5p6p7p8p9p10p11p12p13p14p15p16p17p18p19p1
A++++++++++20
B+++++++++++2
C++++++++++++1
D+++++++++7
E++++++++++3
F+++++++/−+4
G+++++++7
H++++++++++++23
I++++++++++1
J+++++++++1
K++++++++2
L+++++++/−+1
M++++++++2
N++++++2
O++++++++++1
P+++++++1
Q++++++++1
R++++++++++1
S+++++++1
T++++++++8
U++++++9
V+++++++1
W+++/−+7
X+++1
  • a +, ++, +/−, amplicons the same size as, larger than, and smaller than those obtained for E. faecium BM4147 (containing Tn1546), respectively; −, absence of an amplicon with the particular pair of primers.