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INFORMATION FOR

Seasonal or Epidemic Viruses Detected

Includes common respiratory, enteric (rotavirus, norovirus), and vector borne (WNV, POW) viruses.

Weekly Number of Positive Specimens (2006-2025) (a,b)

Week ending
RSV
Flu A
Flu B
SARS CoV-2 (f)
Paraflu (1,2,3,4)
Adeno
HMPV
Rhino
CoV
Entero
Parecho
Rota (c)
Noro
WNV (d)
Powassan (e)
Week ending
2025.04.12
13
23
90
48
10
5
32
52
9
0
0
0
6
0
0
2025.04.12
2025.04.05
8
27
110
52
2
4
16
40
8
0
0
0
10
0
0
2025.04.05
2025.03.29
27
33
117
60
6
2
14
38
19
1
0
0
5
0
0
2025.03.29
2025.03.22
15
60
153
80
5
2
10
41
23
0
0
0
16
0
0
2025.03.22
2025.03.15
25
92
143
82
2
5
5
38
28
0
0
1
6
0
0
2025.03.15
2025.03.08
35
169
118
75
6
4
9
27
32
0
0
2
14
0
0
2025.03.08
2025.03.01
35
190
73
75
3
1
5
14
30
0
0
2
9
0
0
2025.03.01
2025.02.22
43
349
45
83
3
4
6
12
27
0
0
0
14
0
0
2025.02.22
2025.02.15
50
520
48
102
1
7
5
11
40
0
0
0
14
0
0
2025.02.15
2025.02.08
79
751
60
118
2
8
1
19
47
1
0
1
26
0
0
2025.02.08
2025.02.01
93
776
30
124
3
6
7
23
40
0
0
0
11
0
0
2025.02.01
2025.01.25
116
595
23
122
4
3
5
25
30
0
0
0
18
0
0
2025.01.25
2025.01.18
118
474
11
158
5
7
9
25
31
0
0
1
10
0
0
2025.01.18
2025.01.11
134
349
19
136
7
6
12
40
20
0
0
0
10
0
0
2025.01.11
2025.01.04
206
307
13
134
12
8
9
39
29
0
0
0
7
0
0
2025.01.04
2024.12.28
182
177
12
93
7
2
2
42
13
1
0
0
9
0
0
2024.12.28
2024.12.21
186
102
7
85
7
3
10
51
11
2
0
0
8
0
1
2024.12.21
2024.12.14
154
50
9
66
5
5
6
57
9
1
0
0
15
0
0
2024.12.14
2024.12.07
102
25
1
63
7
1
6
49
3
0
0
1
10
0
0
2024.12.07
2024.11.30
60
12
2
49
15
2
1
42
4
0
0
0
4
0
0
2024.11.30

Footnotes

a : Samples tested may be obtained from patients at Yale New Haven Hospital, from other hospitals in the region, from community doctors’ offices or clinics

b : PCR is predominant test used, unless otherwise stated

c : Transitioned from ELISA to PCR on 5/16/2023

d : West Nile based on IgM in CSF or serum; rarely PCR. Number of positive patients, not samples. Week reflects when result reported.

e : Powassan based on IgM in CSF or serum. Number of positive patients, not samples. Week reflects when result reported.

f : SARS CoV-2 Testing started on 03/13/2020.

RSV, respiratory syncytial virus; HMPV, human metapneumovirus; CoV, coronaviruses 229E, OC43, NLS63 and HKU1

Influenza Type A Subtype results*

From 2017 to 2025
Week prior to
Total Subtyped
pdmH1
H3
2025.04.12*
7
5
2
2025.04.05*
10
8
2
2025.03.29*
13
9
4
2025.03.22
38
24
14
2025.03.15
58
44
14
2025.03.08
64
44
20
2025.03.01
96
63
33
2025.02.22
158
112
46
2025.02.15*
183
129
54
2025.02.08*
232
167
65
2025.02.01*
157
99
58
2025.01.25
88
51
37
2025.01.18
71
36
35
2025.01.11
89
56
33
2025.01.04
21
13
8
2024.12.28
40
25
15
2024.12.21
72
48
21
2024.12.14
1
1
0
2024.12.07
1
1
0
2024.11.30
0
0
0

Footnotes

*Beginning with the week of 2025.02.01, subtyping includes Influenza A samples from other YNHHS hospitals.