Detection of parainfluenza viruses in respiratory specimens in 2025

Week number	Date	No. of specimen tested	Parainfluenza 1		Parainfluenza 2		Parainfluenza 3		Parainfluenza 4
Week number	Date	No. of specimen tested	No.	%	No.	%	No.	%	No.	%
1	29/12/2024 - 04/01	8424	51	0.61	9	0.11	42	0.50	57	0.68
2	05/01 - 11/01	8864	51	0.58	11	0.12	44	0.50	62	0.70
3	12/01 - 18/01	9016	48	0.53	11	0.12	30	0.33	85	0.94
4	19/01 - 25/01	9353	41	0.44	7	0.07	47	0.50	54	0.58
5	26/01 - 01/02	7715	33	0.43	7	0.09	33	0.43	55	0.71
6	02/02 - 08/02	10016	49	0.49	16	0.16	42	0.42	59	0.59
7	09/02 - 15/02	9196	38	0.41	12	0.13	44	0.48	62	0.67
8	16/02 - 22/02	8794	34	0.39	12	0.14	42	0.48	56	0.64
9	23/02 - 01/03	8100	45	0.56	5	0.06	34	0.42	45	0.56
10	02/03 - 08/03	8236	40	0.49	5	0.06	47	0.57	58	0.70
11	09/03 - 15/03	8146	56	0.69	6	0.07	54	0.66	40	0.49
12	16/03 - 22/03	7782	48	0.62	2	0.03	44	0.57	43	0.55
13	23/03 - 29/03	8620	46	0.53	4	0.05	43	0.50	42	0.49
14	30/03 - 05/04	7420	46	0.62	5	0.07	33	0.44	40	0.54
15	06/04 - 12/04	8648	49	0.57	7	0.08	41	0.47	35	0.40
16	13/04 - 19/04	8507	44	0.52	4	0.05	39	0.46	28	0.33
17	20/04 - 26/04	8879	45	0.51	3	0.03	37	0.42	35	0.39
18	27/04 - 03/05	8468	31	0.37	2	0.02	39	0.46	20	0.24
19	04/05 - 10/05	8819	27	0.31	5	0.06	47	0.53	21	0.24
20	11/05 - 17/05	8797	33	0.38	2	0.02	45	0.51	23	0.26
21	18/05 - 24/05	8869	17	0.19	8	0.09	38	0.43	28	0.32
22	25/05 - 31/05	8238	16	0.19	4	0.05	37	0.45	37	0.45
23	01/06 - 07/06	8111	22	0.27	7	0.09	47	0.58	16	0.20
24	08/06 - 14/06	7901	11	0.14	3	0.04	34	0.43	28	0.35
25	15/06 - 21/06	7487	11	0.15	6	0.08	36	0.48	18	0.24
26	22/06 - 28/06	7532	18	0.24	3	0.04	52	0.69	19	0.25
27	29/06 - 05/07	7226	12	0.17	11	0.15	25	0.35	16	0.22
28	06/07 - 12/07	7497	16	0.21	2	0.03	42	0.56	20	0.27
29	13/07 - 19/07	7522	10	0.13	6	0.08	38	0.51	15	0.20
30	20/07 - 26/07	7409	8	0.11	9	0.12	47	0.63	21	0.28
31	27/07 - 02/08	7764	3	0.04	6	0.08	41	0.53	12	0.15
32	03/08 - 09/08	7303	10	0.14	4	0.05	36	0.49	14	0.19
33	10/08 - 16/08	7913	11	0.14	4	0.05	25	0.32	10	0.13
34	17/08 - 23/08	8047	12	0.15	5	0.06	28	0.35	16	0.20
35	24/08 - 30/08	8458	6	0.07	12	0.14	32	0.38	16	0.19
36	31/08 - 06/09	7996	5	0.06	12	0.15	23	0.29	16	0.20
37	07/09 - 13/09	8194	6	0.07	7	0.09	21	0.26	15	0.18
38	14/09 - 20/09	8459	10	0.12	9	0.11	17	0.20	18	0.21
39	21/09 - 27/09	7867	5	0.06	8	0.10	21	0.27	17	0.22
40	28/09 - 04/10	8287	4	0.05	11	0.13	17	0.21	10	0.12
41	05/10 - 11/10	8193	1	0.01	6	0.07	14	0.17	5	0.06
42	12/10 - 18/10	8723	8	0.09	6	0.07	20	0.23	13	0.15
43	19/10 - 25/10	8126	4	0.05	13	0.16	10	0.12	14	0.17
44	26/10 - 01/11	8557	3	0.04	14	0.16	18	0.21	9	0.11
45	02/11 - 08/11	8296	2	0.02	8	0.10	18	0.22	15	0.18
46	09/11 - 15/11	8283	4	0.05	8	0.10	19	0.23	22	0.27
47	16/11 - 22/11	8196	5	0.06	17	0.21	21	0.26	21	0.26
48	23/11 - 29/11	8406	5	0.06	6	0.07	17	0.20	17	0.20

Remarks:

1. For specimens received from 10 February 2014 onwards, molecular testing has replaced viral culture. Please interpret the data and trends in light of the enhanced sensitivity of molecular testing, and hence positive detection rates.

2. Figures are subject to minor adjustments.

3. Multiple specimens may have been received for testing from the same patient.
4. As a result of disruptions in laboratory testing from early 2020 to early 2023, please interpret the data with caution.