Fact Sheet

Monthly Number of Cases of The Same Period During The Most Recent 5 Years, Severe Complicated Influenza, Indigenous and Imported, Nationwide

Month
2020
2021
2022
2023
2024
2025
01
375
0
0
17
163
300
02
440
0
0
35
315
664
03
441
1
0
51
421
808
04
441
1
0
127
542
808
Total
441
1
0
127
542
808

Monthly Number of Cases of The Same Period During The Most Recent 5 Years, Severe Complicated Influenza, Indigenous and Imported, Nationwide

Month
2020
2021
2022
2023
2024
2025
01
375
0
0
17
163
300
02
65
0
0
18
152
364
03
1
1
0
16
106
144
04
0
0
0
76
121
0
Total
441
1
0
127
542
808
  1. The period for this query is from 2020/01/01 to 2025/04/30
  2. Data as of 2025/04/02 07:17 AM, Current Week is Week 14/2025, Current Month is Month 4/2025.
  3. The results of queries are generated automatically. Data may be subject to change without prior notice.
  4. The cumulative annual number of cases is calculated according to the year of notification, onset, or confirmation.
  5. Since August 1, 2014, "Complicated Influenza" has been renamed as "Severe Complicated Influenza". The case definition for "Severe Complicated Influenza" has also been changed since then. Only cases of influenza with complications and have been admitted to ICU or died are required to be reported.
  6. Yearly statistical data must be compiled using 'Year' or 'Year-Month' as the statistical units, with an appropriate data period selected. The 'Year-Week' unit should be used for weekly statistical data. Since weeks may span across different years, the total sum of all weekly data in a year does not equal the yearly statistical data.