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Table 5 Serotype distribution among pneumococcal strains displaying resistance to at least one antibiotic class (n = number of strains, % = percent of strains per geographic region).

From: Risk factors for nasopharyngeal carriage of drug-resistant Streptococcus pneumoniae: data from a nation-wide surveillance study in Greece

  Athens (n, %) Halkida (n, %) Thessaloniki (n, %) Ioannina (n, %) Alexandroupolis (n, %) Herakleion (n, %) Peloponnese (n, %) Total (n,%)
PCV7* serotypes 80 (70.17) 42 (73.68) 33 (58.92) 10 (76.92) 6 (54.55) 25 (75.76) 30 (90.91) 226 (71.29)
19F 32 (28.07) 20 (35.09) 9 (16,07) 2 (15.38) 3 (27.27) 11 (33.33) 10 (30.3) 87 (27.44)
14 10 (8.77) 6 (10.53) 10 (17.86)    11 (33.33) 3 (9.09) 40 (12.62)
9V 20 (17.54)   2 (3.57) 2 (15.38)    10 (30.3) 34 (10.73)
23F 10 (8.77) 6 (10.53) 6 (10.71) 5 (38.46) 1 (9.09) 1 (3.04) 4 (12.13) 33 (10.41)
6B 8 (7.02) 10 (17.54) 5 (8.93) 1 (7.69) 2 (18.18) 2 (6.06) 2 (6.06) 30 (9.46)
18C    1 (1.79)     1 (3.03) 2 (0.63)
PCV7-related serotypes 17 (14.92) 10 (17.55) 11 (19.66) 0 2 (18.18) 4 (12.12) 0 43 (13.56)
6A 7 (6.14) 3 (5.26) 5 (8.93)   0 2 (6.06)   17 (5.36)
Other related 10 (8.78) 7 (12.29) 6 (10.73)   2 (18.18) 2 (6.06)   26 (8,20))
Non PCV7 serogroups 10 (8.77) 3 (5.26) 8 (14.28) 3 (23.08) 1 (9.09) 2 (6.06) 3 (9.09) 32 (10.1)
Nontypeable strains 7 (6.14) 2 (3.51) 4 (7.14) 0 2 (18.18) 2 (6.06) 0 16 (5.05)
Total 114 (100) 57 (100) 56 (100) 13 (100) 11 (100) 33 (100) 33 (100) 317 (100)
  1. *PCV7: heptavalent pneumococcal conjugate vaccine