Influenza virus subtyping in 2021

The information is based on testing of influenza virus isolates obtained from cell culture. The date refers to specimen reception by the laboratory.

Week number	Date	Type A total	Type A subtype H3	Type B total	Type B (Victoria lineage)
1	27/12/2020 - 02/01	0	0	0	0
2	03/01 - 09/01	0	0	0	0
3	10/01 - 16/01	0	0	0	0
4	17/01 - 23/01	0	0	0	0
5	24/01 - 30/01	0	0	0	0
6	31/01 - 06/02	0	0	0	0
7	07/02 - 13/02	0	0	0	0
8	14/02 - 20/02	0	0	0	0
9	21/02 - 27/02	0	0	0	0
10	28/02 - 06/03	0	0	0	0
11	07/03 - 13/03	0	0	0	0
12	14/03 - 20/03	0	0	0	0
13	21/03 - 27/03	0	0	0	0
14	28/03 - 03/04	0	0	0	0
15	04/04 - 10/04	0	0	0	0
16	11/04 - 17/04	0	0	0	0
17	18/04 - 24/04	0	0	0	0
18	25/04 - 01/05	0	0	0	0
19	02/05 - 08/05	0	0	0	0
20	09/05 - 15/05	0	0	0	0
21	16/05 - 22/05	0	0	0	0
22	23/05 - 29/05	0	0	0	0
23	30/05 - 05/06	0	0	0	0
24	06/06 - 12/06	0	0	0	0
25	13/06 - 19/06	0	0	0	0
26	20/06 - 26/06	0	0	0	0
27	27/06 - 03/07	0	0	0	0
28	04/07 - 10/07	0	0	0	0
29	11/07 - 17/07	0	0	0	0
30	18/07 - 24/07	0	0	0	0
31	25/07 - 31/07	0	0	0	0
32	01/08 - 07/08	0	0	0	0
33	08/08 - 14/08	0	0	0	0
34	15/08 - 21/08	0	0	0	0
35	22/08 - 28/08	0	0	0	0
36	29/08 - 04/09	0	0	0	0
37	05/09 - 11/09	0	0	0	0
38	12/09 - 18/09	0	0	0	0
39	19/09 - 25/09	0	0	0	0
40	26/09 - 02/10	0	0	0	0
41	03/10 - 09/10	0	0	1	1
42	10/10 - 16/10	0	0	0	0
43	17/10 - 23/10	0	0	0	0
44	24/10 - 30/10	0	0	0	0
45	31/10 - 06/11	0	0	0	0
46	07/11 - 13/11	0	0	0	0
47	14/11 - 20/11	1	1	0	0
48	21/11 - 27/11	0	0	0	0
49	28/11 - 04/12	0	0	0	0
50	05/12 - 11/12	0	0	0	0
51	12/12 - 18/12	0	0	0	0
52	19/12 - 25/12	1	1	0	0

Remarks:

1. Figures are subject to minor adjustments.

2. Multiple specimens may have been received for testing from the same patient.
3. As a result of disruptions in laboratory testing since early 2020, please interpret the data with caution.