Figure 3个  Table 2
    • Age group (years) Number of samples No. (%) of positive samples
      HCoVs HCoV-229E HCoV-NL63 HCoV-OC43 HCoV-HKU1
      0–10 2529 23 (0.91) 5 (0.2) 2 (0.08) 12 (0.47) 4 (0.16)
      11–20 307 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)
      21–30 177 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)
      31–40 238 1 (0.42) 0 (0) 0 (0) 1 (0.42) 0 (0)
      41–50 323 2 (0.62) 1 (0.31) 0 (0) 1 (0.31) 0 (0)
      51–60 465 3 (0.65) 0 (0) 1 (0.22) 2 (0.43) 0 (0)
      61–70 617 4 (0.65) 1 (0.16) 0 (0) 2 (0.32) 1 (0.16)
      71–80 1237 7 (0.57) 2 (0.16) 1 (0.08) 3 (0.24) 1 (0.08)
      > 80 2380 36 (1.51) 3 (0.13) 2 (0.08) 26 (1.09) 5 (0.21)
      Unknown 2 1 - - 1 -
      Total 8275 77 (0.93) 12 (0.15) 6 (0.07) 48 (0.58) 11 (0.13)

      Table 1.  Age distribution of nasopharyngeal samples positive for human coronaviruses.

    • Age groups (years) Number of samples No. (%) of samples positive for HCoV-OC43 P value *
      0–10 2529 12 (0.47) 0.014
      11–20 307 0 (0) 0.066
      21–30 177 0 (0) 0.162
      31–40 238 1 (0.42) 0.328
      41–50 323 1 (0.31) 0.184
      51–60 465 2 (0.43) 0.186
      61–70 617 2 (0.32) 0.077
      71–80 1237 3 (0.24) 0.007
      > 80 2380 26 (1.09) -
      Note: * Using > 80 years old as the reference age group; P < 0.05 was considered to be statistically significant.

      Table 2.  Comparisons between patients aged > 80 years and those of other age groups infected with HCoV-OC43