Table 1. Number of viruses characterised antigenically and genetically as reported to TESSy^a by country and week of sampling, WHO European Region, week 40 2021–week 4 2022 (n = 987 characterisations).

Reporting country	Characterisation	2021 Week number													2022 Week number				Total
Reporting country	Characterisation	40	41	42	43	44	45	46	47	48	49	50	51	52	01	02	03	04
Croatia	AG	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Croatia	GEN	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1
Denmark	AG	0	0	0	0	0	0	0	0	0	1	0	1	0	0	0	0	0	2
Denmark	GEN	1	1	1	4	1	0	3	3	6	18	8	27	19	14	17	9	2	134
Finland	AG	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Finland	GEN	1	0	0	2	0	0	2	3	1	0	0	0	0	0	0	0	0	9
Germany	AG	1	1	0	1	1	0	0	2	0	0	2	4	4	8	4	5	1	34
Germany	GEN	0	0	0	1	0	0	2	2	0	0	0	0	0	0	0	0	0	5
Ireland	AG	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Ireland	GEN	0	0	0	0	0	0	2	0	1	1	0	4	1	1	4	0	0	14
Italy	AG	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Italy	GEN	0	0	0	1	4	1	0	1	0	0	2	1	0	0	0	0	0	10
Netherlands	AG	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Netherlands	GEN	13	21	30	29	13	16	15	13	12	6	11	18	20	9	9	5	0	240
North Macedonia	AG	0	0	0	0	0	0	0	1	0	0	2	0	0	5	0	0	0	8
North Macedonia	GEN	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Norway	AG	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Norway	GEN	0	4	2	1	0	4	4	10	7	14	18	4	3	0	0	0	0	71
Russia	AG	0	3	1	4	9	13	16	9	16	12	2	0	0	0	0	0	0	85
Russia	GEN	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Spain	AG	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Spain	GEN	1	2	2	4	6	16	16	25	19	36	61	21	3	0	0	0	0	212
Sweden	AG	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Sweden	GEN	2	4	5	11	13	10	8	12	8	7	12	11	8	2	0	0	0	113
Switzerland	AG	0	0	0	0	0	0	0	2	1	0	0	0	1	0	3	0	0	7
Switzerland	GEN	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
United Kingdom	AG	0	1	0	0	0	0	0	1	1	2	0	0	2	1	0	0	0	8
United Kingdom	GEN	0	4	2	3	1	0	2	2	2	4	4	3	6	1	0	0	0	34
Total	AG	1	5	1	5	10	13	16	15	18	15	6	5	7	14	7	5	1	144
Total	GEN	18	36	43	56	38	47	54	71	56	86	116	89	60	27	30	14	2	843

AG: antigenic; GEN: genetic; TESSy: The European Surveillance System; WHO: World Health Organization.

^a The number of virus characterisations are as reported to TESSy (in both aggregated and strain-based reports).

Light blue and light green respectively indicate antigenic and genetic characterisations.

Table 1. Number of viruses characterised antigenically and genetically as reported to TESSya by country and week of sampling, WHO European Region, week 40 2021–week 4 2022 (n = 987 characterisations).