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Table 2 RT-PCR results by age group and overall

From: The 2017–2018 influenza season in Bucharest, Romania: epidemiology and characteristics of hospital admissions for influenza-like illness

Category< 1 y
N = 39
1–2 y
N = 111
3–4 y
N = 77
5–13 y
N = 103
14–17 y
N = 7
18–64 y
N = 135
≥65 y
N = 30
Overall
N = 502
Laboratory-confirmed influenza19 (48.7)46 (41.4)42 (54.5)66 (64.1)5 (71.4)66 (48.9)15 (50.0)259 (51.6)
Influenza A7 (17.9)18 (16.2)28 (36.4)15 (14.6)0 (0.0)16 (11.9)3 (10.0)87 (17.3)
 A/H16 (15.4)15 (13.5)22 (28.6)10 (9.7)0 (0.0)5 (3.7)1 (3.3)59 (11.8)
 A/H31 (2.6)1 (0.9)4 (5.2)3 (2.9)0 (0.0)6 (4.4)0 (0.0)15 (3.0)
 A/not subtyped0 (0.0)2 (1.8)2 (2.6)2 (1.9)0 (0.0)5 (3.7)2 (6.7)13 (2.6)
Influenza B12 (30.8)28 (25.2)14 (18.2)51 (49.5)5 (71.4)50 (37.0)12 (40.0)172 (34.3)
 B/Yamagata6 (15.4)14 (12.6)8 (10.4)29 (28.2)2 (28.6)22 (16.3)4 (13.3)85 (16.9)
 B/Victoria0 (0.0)2 (1.8)0 (0.0)6 (5.8)0 (0.0)1 (0.7)0 (0.0)9 (1.8)
 B/not characterized6 (15.4)12 (10.8)6 (7.8)16 (15.5)3 (42.9)27 (20.0)8 (26.7)78 (15.5)
Laboratory-confirmed RSV9 (23.1)19 (17.1)11 (14.3)5 (4.9)0 (0.0)2 (1.5)2 (6.7)48 (9.6)a
  1. Abbreviations: RSV Respiratory syncytial virus, RT-PCR Real-time reverse-transcription polymerase chain reaction
  2. a Six patients had RSV and influenza B coinfection