Situation of COVID-19 (23 January 2020 to 29 January 2023)
The Centre for Health Protection (CHP) of the Department of Health (DH) has updated the epidemic
situation of COVID-19 (up to 29 January 2023). Between 23 January 2020 and 29 January 2023, Hong
Kong has recorded a total of 1226467 and 1880112 cases tested positive by nucleic acid tests and RATs
respectively for the SARS-CoV-2 virus.
Figure 1(i): 7-day moving average of cases tested positive for SARS-CoV-2
virus by nucleic acid tests since 2022
7-day moving average of reported cases
50000
7-day moving verage of cases
45000
40000
35000
30000
25000
20000
15000
10000
14/01
28/01
14/01
28/01
31/12
17/12
03/12
19/11
05/11
22/10
08/10
24/09
10/09
27/08
13/08
30/07
16/07
02/07
18/06
04/06
21/05
07/05
23/04
09/04
26/03
12/03
26/02
12/02
29/01
15/01
0
01/01
5000
Date of reporting
Note: Re-positive cases are excluded in Figure 1(i).
Figure 1(ii): 7-day moving average of cases tested positive for SARS-CoV-2 virus
by rapid antigen tests since 2022
7-day moving average of reported cases
7-day moving verage of cases
25000
20000
15000
10000
Date of reporting
Note: Re-positive cases are excluded in Figure 1(ii).
1
31/12
17/12
03/12
19/11
05/11
22/10
08/10
24/09
10/09
27/08
13/08
30/07
16/07
02/07
18/06
04/06
21/05
07/05
23/04
09/04
26/03
12/03
26/02
12/02
29/01
15/01
0
01/01
5000
Figure 1(iii): 7-day moving average of cases tested positive for SARS-CoV-2
virus by nucleic acid tests in 2021
7-day moving average of reported cases in 2021
160
7-day moving verage of cases
140
120
100
80
60
40
31/12
17/12
03/12
19/11
05/11
22/10
08/10
24/09
10/09
27/08
13/08
30/07
16/07
02/07
18/06
04/06
21/05
07/05
23/04
09/04
26/03
12/03
26/02
12/02
29/01
15/01
0
01/01
20
Date of reporting
Note: Re-positive cases are excluded in Figure 1(iii).
Figure 1(iv): 7-day moving average of cases tested positive
for SARS-CoV-2 virus by nucleic acid tests in 2020
7-day moving average of reported cases in 2020
160
7-day moving verage of cases
140
120
100
80
60
40
Date of reporting
Note: Re-positive cases are excluded in Figure 1(iv).
2
24/12
10/12
26/11
12/11
29/10
15/10
01/10
17/09
03/09
20/08
06/08
23/07
09/07
25/06
11/06
28/05
14/05
30/04
16/04
02/04
19/03
05/03
20/02
06/02
0
23/01
20
Figure 2: Epidemic curve of cases tested positive for SARS-CoV-2 virus in Hong Kong
between 31 December 2021 and 29 January 2023
Epidemic curve of reported cases
120000
Nnumber of cases
100000
80000
60000
40000
20000
0
Specimen collection date
Nucleic acid test
Rapid antigen test
Table 1 shows the classification of cases reported since the 5th wave (since 31 December 2021) by
importation status.
Table 1: Number of cases tested positive for SARS-CoV-2 virus by nucleic acid tests
and rapid antigen tests by classification
Reporting period
Imported case
Locally acquired case
Period total
Since the 5th wave
81117 (2.62%)
3012831 (97.38%)
3093948 (100.00%)
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Figure 3 shows the age and gender distribution of the cases between 31 December 2021 and 29
January 2023.
Figure 3(i): Age and gender distribution of cases tested positive for SARS-CoV-2 virus
by nucleic acid tests in Hong Kong
Age and gender distribution
100+
90-99
80-89
70-79
Female
60-69
Male
50-59
40-49
30-39
20-29
10-19
0-9
10.0
8.0
6.0
4.0
2.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
Percentage
Figure 3(ii): Age and gender distribution of cases tested positive for SARS-CoV-2 virus
by rapid antigen tests in Hong Kong
Age and gender distribution
100+
90-99
80-89
70-79
Female
60-69
Male
50-59
40-49
30-39
20-29
10-19
0-9
10.0
8.0
6.0
4.0
2.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
Percentage
Source of data: Data from the Centre for Health Protection of the Department of Health with available information
on age and gender.
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Figure 4: Weekly rates of positive cases tested by nucleic acid tests and rapid antigen tests
(by age group) between 31 December 2021 and 29 January 2023
Positive cases (per 10,000 population)
Weekly rates of positive cases by age group
800
700
600
500
400
300
200
100
0
52
2
4
6
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52
2021
2022
Date of reporting (year/week)
0-9
10 - 19
20 - 39
40 - 59
1
3
2023
60 - 79
80+
Note: Imported cases are excluded in Figure 4.
Table 2: Incidences of cases tested positive for SARS-CoV-2 virus by nucleic acid tests and
rapid antigen tests by residential districts since 2022
Region
Cumulative
Incidence
Hong Kong
2758.6
Kowloon
3258.9
New Territories East
3311.4
New Territories West
3378.5
District
Cumulative Incidence
Central and Western
Wan Chai
Eastern
Southern
Kowloon City
Kwun Tong
Sham Shui Po
Wong Tai Sin
Yau Tsim Mong
Islands
North
Sai Kung
Sha Tin
Tai Po
Kwai Tsing
Tsuen Wan
Tuen Mun
Yuen Long
2362.6
2152.0
3035.4
2943.3
2914.2
3573.8
3148.5
3502.3
2861.0
2721.4
3550.2
3241.7
3433.5
3263.5
3388.3
3196.2
3572.0
3312.7
Note: Data in Table 2 are shown as number of cases per 10,000 population.
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In 2022, the death registry of Hong Kong recorded a total of 9,291 deaths with COVID-19 being the
cause of death. Among these 9,291 registered deaths, 9,287 involved local cases reported during the
fifth wave, while two had date of death before 2022 and the remaining two involved imported cases.
Table 3: Number and estimated CFR of local cases reported and having death certificates issued
in 2022 stratified by age group and vaccination status
Number of local cases reported and having death certificates issued in 2022
Age group(s)
All cases
(Estimated CFR)
History of
History of receiving
receiving > 3 doses
1 or 2 dose(s) of
of COVID-19
COVID-19 vaccine
vaccine
0 (0.00%)
2 (0.00%)
Unvaccinated
0-9
8 (0.00%)
6 (0.01%)
10-19
1 (0.00%)
0 (0.00%)
0 (0.00%)
1 (0.00%)
20-29
11 (0.00%)
0 (0.00%)
5 (0.00%)
6 (0.02%)
30-39
13 (0.00%)
1 (0.00%)
2 (0.00%)
10 (0.02%)
40-49
49 (0.01%)
3 (0.00%)
13 (0.01%)
33 (0.09%)
50-59
203 (0.05%)
13 (0.01%)
66 (0.04%)
124 (0.36%)
60-69
676 (0.17%)
37 (0.02%)
209 (0.14%)
430 (0.97%)
70-79
1433 (0.74%)
100 (0.12%)
388 (0.52%)
945 (2.79%)
80+
6893 (5.01%)
419 (1.01%)
1559 (3.40%)
4915 (9.79%)
Overall
9287 (0.34%)
573 (0.05%)
2244 (0.20%)
6470 (1.49%)
Source of data: Data from the Centre for Health Protection of the Department of Health with available information on vaccination status.
Remark: The estimated CFR is computed with numerator being the number of fatal cases passed away in 2022 with death certificates
issued on or before December 31, 2022 having COVID-19 as the cause of death, while the denominator refers to COVID-19 tested positive
cases with report date within 2022.
Centre for Health Protection
Department of Health
Last updated on 27 July 2023
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