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INFORMATION FOR

2023 Seasonal or Epidemic Viruses Detected

Number of Positive Samplesa,b
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. No. positive patients, not samples. Week reflects when result reported.
e : Powassan based on IgM in CSF or serum. No. 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
2023 RSV Flu A Flu B SARS CoV-2f Paraflu1,2,3,4 Adeno HMPV Rhino CoV Entero Parecho Rotac Noro WNVd Powassane
11/19-11/25/2023 133 55 2 124 5 4 0 39 0 0 0 1 1 0 0
11/12-11/18/2023 113 32 2 97 3 3 2 63 2 0 0 0 2 0 0
11/5-11/11/2023 86 22 3 100 11 6 1 44 0 0 0 1 3 0 0
10/29-11/4/2023 68 26 5 76 9 3 1 49 0 1 0 0 0 0 0
November
10/22-10/28/2023 60 15 1 84 8 0 2 51 0 0 0 0 1 0 0
10/15-10/21/2023 34 6 0 83 5 0 0 56 0 1 0 0 2 0 0
10/8-10/14/2023 23 1 0 96 3 0 0 79 1 0 0 0 1 0 0
10/1-10/7/2023 14 1 0 129 8 3 0 87 1 0 0 0 1 0 0
October
9/24-9/30/2023 14 3 0 124 3 2 1 82 1 1 0 0 0 0 0
9/17-9/23/2023 5 2 0 126 3 6 2 64 1 0 0 0 0 0 0
9/10-9/16/2023 6 2 1 122 5 2 0 48 2 3 0 0 2 0 0
9/3-9/9/2023 8 3 0 161 4 6 1 36 0 1 0 0 0 0 0
8/27-9/2/2023 6 0 0 115 3 4 1 32 0 2 0 0 2 1 0
September
8/20-8/26/2023 6 3 0 72 5 2 0 25 0 0 0 0 0 0 0
8/13-8/19/2023 1 4 0 76 4 8 0 24 3 0 0 1 0 0 0
8/6-8/12/2023 0 2 0 75 7 6 0 23 0 3 0 0 2 0 0
7/30-8/5/2023 1 2 0 59 7 9 0 18 0 0 0 0 3 0 0
August
7/23-7/29/2023 0 4 0 41 4 4 0 19 1 2 0 0 2 0 0
7/16-7/22/2023 1 2 0 23 7 7 0 31 0 1 0 0 1 0 0
7/9-7/15/2023 0 3 1 29 8 5 1 17 0 2 0 0 1 0 0
7/2-7/8/2023 0 1 1 22 10 6 0 17 0 1 0 1 2 0 0
6/25-7/1/2023 0 0 0 23 6 9 1 26 0 0 0 1 3 0 0
July
6/18-6/24/2023 0 0 0 17 13 4 0 23 2 3 0 0 0 0 0
6/11-6/17/2023 0 2 2 18 8 13 1 32 0 0 0 6 4 0 0
6/4-6/10/2023 0 4 3 33 11 13 1 34 1 0 0 4 3 0 0
5/28-6/3/2023 0 0 0 26 19 4 3 35 0 0 0 1 6 0 0
June
5/21-5/27/2023 0 1 1 34 16 8 3 42 1 0 0 7 4 0 0
5/14-5/20/2023 1 1 2 34 18 9 5 37 0 0 0 1 0 0 0
5/7-5/13/2023 3 1 4 36 28 20 3 40 0 2 0 1 1 0 0
4/30-5/6/2023 1 1 0 41 23 10 4 23 0 0 0 0 7 0 0
May
4/23-4/29/2023 2 1 0 54 34 13 6 25 1 0 0 0 3 0 0
4/16-4/22/2023 4 0 3 71 24 8 19 27 2 0 0 0 7 0 0
4/9-4/15/2023 1 0 2 54 21 17 18 31 3 0 0 0 6 0 0
4/2-4/8/2023 4 2 3 100 14 10 9 26 2 0 0 0 11 0 0
3/26-4/1/2023 2 3 4 78 16 8 20 35 1 0 0 0 11 0 0
April
3/19-3/25/2023 2 3 3 128 9 4 30 45 3 0 0 1 11 0 0
3/12-3/18/2023 6 6 1 127 7 7 32 33 1 0 0 1 11 0 0
3/5-3/11/2023 9 7 3 145 7 4 21 29 1 0 0 0 8 0 0
2/26-3/4/2023 9 3 0 171 4 8 28 27 1 0 0 0 12 0 0
March
2/19-2/25/2023 4 6 2 241 8 10 25 26 0 0 0 1 6 0 0
2/12-2/18/2023 13 4 3 248 3 19 22 39 0 0 0 0 5 0 0
2/5-2/11/2023 9 11 1 318 2 9 16 22 0 0 0 0 3 0 0
1/29-2/4/2023 12 6 1 339 8 22 11 22 4 0 3 0 2 0 0
February
1/22-1/28/2023 16 8 1 456 7 5 12 22 2 0 1 0 3 0 0
1/15-1/21/2023 19 18 2 516 4 4 11 20 3 0 0 0 4 0 0
1/8-1/14/2023 28 57 1 587 3 14 11 16 2 0 0 0 2 0 0
1/1-1/7/2023 39 137 1 681 5 9 13 21 3 0 0 0 1 0 0
January

2023 Influenza Type A Subtype results

2023 Total Subtyped pdmH1 H3

11/19-11/25/2023 2 1 1
11/12-11/18/2023 7 7 0
11/5-11/11/2023 0 0 0
10/29-11/4/2023 1 1 0
November
10/22-10/28/2023 0 0 0
10/15-10/21/2023 0 0 0
10/8-10/14/2023 0 0 0
10/1-10/7/2023 0 0 0
October
9/24-9/30/2023 1 1 0
9/17-9/23/2023 0 0 0
9/10-9/16/2023 0 0 0
9/3-9/9/2023 1 1 0
8/27-9/2/2023 0 0 0
September
8/20-8/26/2023 0 0 0
8/13-8/19/2023 2 2 0
8/6-8/12/2023 1 1 0
7/30-8/5/2023 0 0 0
August
7/23-7/29/20230 1 1 0
7/16-7/22/20230 0 0 0
7/9-7/15/2023 0 0 0
7/2-7/8/2023 0 0 0
6/25-7/1/2023 0 0 0
July
6/18-6/24/2023 0 0 0
6/11-6/17/2023 0 0 0
6/4-6/10/2023 1 1 0
5/28-6/3/2023 0 0 0
June
5/21-5/27/2023 0 0 0
5/14-5/20/2023 0 0 0
5/7-5/13/2023 0 0 0
4/30-5/6/2023 0 0 0
May
4/23-4/29/2023 1 0 1
4/16-4/22/2023 0 0 0
4/9-4/15/2023 0 0 0
4/2-4/8/2023 0 0 0
3/26-4/1/2023 0 0 0
April
3/19-3/25/2023 0 0 0
3/12-3/18/2023 0 0 0
3/5-3/11/2023 0 0 0
2/26-3/4/2023 0 0 0
March
2/19-2/25/2023 6 2 4
2/12-2/18/2023 0 0 0
2/5-2/11/2023 0 0 0
1/29-2/4/2023 1 1 0
February
1/22-1/28/2023 1 0 1
1/15-1/21/2023 24 12 12
1/8-1/14/2023 0 0 0
1/1-1/7/2023 7 3 1
January

Past Years' Reports

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