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Dispatch
Respiratory Infections during
SARS Outbreak, Hong Kong, 2003
Janice Y.C. Lo,* Thomas H.F. Tsang,* Yiu-Hong Leung,* Eugene Y.H.
Yeung,* Thomson Wu,* and Wilina W.L. Lim*
*Department of Health, Hong Kong Special Administrative Region, People's
Republic of China
|
Table. Change in proportion of positive specimens
(PPS) in 2003 for various viruses with reference to the period 1998–2002* |
|
|
Virus |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
|
Influenza |
| |
No. isolates |
327 |
419 |
786 |
105 |
22 |
58 |
96 |
54 |
121 |
50 |
10 |
35 |
|
No. tests performed |
1,166 |
1,530 |
5,432 |
3,758 |
1,495 |
974 |
776 |
665 |
1,283 |
1,193 |
1,008 |
1,407 |
|
PPS (03) |
0.28 |
0.27 |
0.14 |
0.03 |
0.01 |
0.06 |
0.12 |
0.08 |
0.09 |
0.04 |
0.01 |
0.02 |
|
Average PPS (98–02) |
0.235 |
0.368 |
0.329 |
0.154 |
0.127 |
0.143 |
0.186 |
0.153 |
0.063 |
0.022 |
0.019 |
0.044 |
|
Range of PPS (98–02) |
0.067–0.321 |
0.143–0.519 |
0.121–0.517 |
0.065–0.203 |
0.043–0.194 |
0.072–0.216 |
0.145–0.232 |
0.123–0.173 |
0.040–0.105 |
0.009–0.044 |
0.008–0.030 |
0.022–0.110 |
|
% change† |
+19 |
–26 |
–56 |
–82 |
–88 |
–58 |
–33 |
–47 |
+49 |
+87 |
–49 |
–44 |
|
|
Parainfluenza |
| |
No. isolates |
29 |
35 |
75 |
12 |
2 |
1 |
11 |
26 |
29 |
68 |
75 |
112 |
|
No. tests performed |
1,166 |
1,530 |
5,432 |
3,758 |
1,495 |
974 |
776 |
665 |
1,283 |
1,193 |
1,008 |
1,407 |
|
PPS (03) |
0.02 |
0.02 |
0.01 |
0.00 |
0.00 |
0.00 |
0.01 |
0.04 |
0.02 |
0.06 |
0.07 |
0.08 |
|
Average PPS (98–02) |
0.035 |
0.025 |
0.022 |
0.036 |
0.037 |
0.034 |
0.023 |
0.017 |
0.027 |
0.061 |
0.081 |
0.065 |
|
Range of PPS (98–02) |
0.014–0.106 |
0.014–0.053 |
0.008–0.046 |
0.021–0.046 |
0.024–0.054 |
0.026–0.046 |
0.017–0.034 |
0.010–0.028 |
0.014–0.043 |
0.025–0.102 |
0.031–0.149 |
0.035–0.156 |
|
% change† |
–28 |
–8 |
–38 |
–91 |
–96 |
–97 |
–38 |
+135 |
–16 |
–7 |
–9 |
+22 |
|
|
RSV |
| |
No. isolates |
49 |
53 |
66 |
24 |
6 |
3 |
8 |
53 |
181 |
48 |
12 |
5 |
|
No. tests performed |
1,166 |
1,530 |
5,432 |
3,758 |
1,495 |
974 |
776 |
665 |
1,283 |
1,193 |
1,008 |
1,407 |
|
PPS (03) |
0.04 |
0.03 |
0.01 |
0.01 |
0.00 |
0.00 |
0.01 |
0.08 |
0.14 |
0.04 |
0.01 |
0.00 |
|
Average PPS (98–02) |
0.014 |
0.021 |
0.055 |
0.104 |
0.081 |
0.066 |
0.072 |
0.094 |
0.092 |
0.036 |
0.022 |
0.032 |
|
Range of PPS (98–02) |
0.003–0.054 |
0.010–0.065 |
0.037–0.090 |
0.055–0.155 |
0.049–0.112 |
0.042–0.098 |
0.038–0.113 |
0.046–0.126 |
0.057–0.118 |
0.018–0.051 |
0.001–0.060 |
0.001–0.072 |
|
% change† |
+203 |
+64 |
–78 |
–94 |
–95 |
–95 |
–86 |
–15 |
+54 |
+13 |
–47 |
–89 |
|
|
Adenovirus |
| |
No. isolates |
61 |
78 |
84 |
41 |
5 |
0 |
1 |
2 |
4 |
7 |
8 |
17 |
|
No. tests performed |
1,166 |
1,530 |
5,432 |
3758 |
1,495 |
974 |
776 |
665 |
1,283 |
1,193 |
1,008 |
1,407 |
|
PPS (03) |
0.05 |
0.05 |
0.02 |
0.01 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.01 |
0.01 |
0.01 |
|
Average PPS (98–02) |
0.034 |
0.030 |
0.035 |
0.056 |
0.055 |
0.058 |
0.068 |
0.044 |
0.038 |
0.049 |
0.052 |
0.074 |
|
Range of PPS (98–02) |
0.012–0.058 |
0.019–0.052 |
0.017–0.071 |
0.012–0.121 |
0.022–0.110 |
0.028–0.105 |
0.032–0.091 |
0.029–0.058 |
0.026–0.054 |
0.045–0.055 |
0.042–0.062 |
0.058–0.093 |
|
% change† |
+52 |
+72 |
–55 |
–81 |
–94 |
–100 |
–98 |
–93 |
–92 |
–88 |
–85 |
–84 |
|
|
Hepatitis B |
| |
No. of positive test results |
16 |
11 |
13 |
18 |
20 |
13 |
19 |
20 |
22 |
21 |
15 |
20 |
|
No. of tests performed |
143 |
98 |
135 |
99 |
97 |
118 |
139 |
135 |
120 |
111 |
102 |
131 |
|
PPS (03) |
0.112 |
0.112 |
0.096 |
0.182 |
0.206 |
0.110 |
0.137 |
0.148 |
0.183 |
0.189 |
0.147 |
0.153 |
|
Average PPS (98–02) |
0.147 |
0.132 |
0.127 |
0.129 |
0.125 |
0.156 |
0.154 |
0.156 |
0.168 |
0.144 |
0.167 |
0.148 |
|
Range of PPS (98–02) |
0.083–0.228 |
0.079–0.190 |
0.093–0.153 |
0.070–0.168 |
0.085–0.162 |
0.096–0.188 |
0.104–0.186 |
0.068–0.228 |
0.086–0.250 |
0.081–0.233 |
0.099–0.249 |
0.082–0.197 |
|
% change† |
–24 |
–15 |
–24 |
+41 |
+65 |
–29 |
–11 |
–5 |
+9 |
+32 |
–12 |
+3 |
|
|
*RSV, respiratory syncytial virus. |
|
†Percentage change of PPS in 2003 with respect to
the average PPS from 1998 to 2002. |
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