TABLE 2

Characteristics of patients with or without an increase in influenza A viral RNA load after day 3a

Clinical characteristicResults for increasing group (n = 9)Results for no increasing group (n = 3)
Subtype
    H1N1 pdm0931
    H3N262
Age (yr)b2.1 ± 1.5 (1.3, 0.6–4.8)3.1 ± 0.3 (3.0, 2.8–3.5)
No. of males42
No. of vaccinationsc21
Time after onsetb14.3 ± 8.3 (18.0, 5.0–26.5)18.8 ± 25.3 (5.5, 3.0–48.0)
Body temp (°C)b39.7 ± 0.5 (39.8, 39.0–40.2)39.9 ± 0.4 (39.9, 39.6–40.3)
Duration of fever (h)b24.8 ± 11.9 (25.0, 11.5–43.0)38.7 ± 4.5 (40.5, 33.5–42.0)
  • a There was no statistically significant difference in clinical characteristics between the groups. The Mann-Whitney U test was used to analyze age, hours after onset, body temperature, and duration of fever; Fisher's exact test was used to analyze sex and vaccination for comparisons between each group.

  • b Data are mean ± SD (median, range).

  • c Influenza vaccines were received prior to each influenza season.