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Maryland 2013-14 Influenza Season Wks 44-28: 1 Total Pediatric Death
During the week ending November 2, 2013, influenza-like illness (ILI) intensity in Maryland was MINIMAL and there was SPORADIC geographic spread of influenza.
Seven influenza-associated hospitalizations were reported.
Three specimens tested positive for influenza by PCR at the DHMH Laboratories Administration.
Two outbreaks of respiratory disease were reported. The number of ILI visits to sentinel providers was still low, compared to baseline.
During the week ending November 16, 2013, influenza-like illness (ILI) intensity in Maryland was MINIMAL and there was LOCAL geographic spread of influenza.
Five influenza-associated hospitalizations were reported.
Three specimens tested positive for influenza by PCR at the DHMH Laboratories Administration.
One outbreak of respiratory disease was reported.
The number of ILI visits to sentinel providers was low, compared to baseline.
Clinical Laboratory Influenza Testing
Thirty-five clinical laboratories reported performing 636 influenza diagnostic tests, mostly rapid influenza diagnostic tests (RIDT).
Of those, 18 (2.8%) were positive for influenza. Of those testing positive, 6 (33%) were influenza type A and 12 (67%) were influenza type B.
Positives (rapid tests), this week, last week, season number
Type A: 6 (33%), 12 (60%), 51 (58%)
Type B: 12 (67%), 8 (40%), 37 (42%)
Total: 18 (100%), 20 (100%), 88 (100%)
During the week ending November 30, 2013, influenza-like illness (ILI) intensity in Maryland was MINIMAL and there was LOCAL geographic spread of influenza.
Six influenza-associated hospitalizations were reported. One specimen tested positive for influenza by PCR at the DHMH Laboratories Administration. One outbreak of respiratory disease was reported. The number of ILI visits to sentinel providers was slightly elevated, but still low compared to baseline.
Sixteen sentinel providers reported a total of 6,507 visits last week. Of those, 83 (1.3%) were visits for ILI. This is below the Maryland baseline of 2.0%.
Emergency Departments in Maryland reported a total of 39,674 visits last week through the ESSENCE surveillance system. Of those, 475 (1.2%) were visits for ILI.
ILI Visits To Emergency Departments By Age Group
Age, this week, last week and season number
Age 0-4: 173 (36%), 179 (37%), 1237 (32%)
Age 5-24: 116 (24%), 143 (29%), 1151 (30%)
Age 25-49:123 (26%), 101 (21%), 983 (25%)
Age 50-64: 37 (8%), 49 (10%),340 (9%)
Age ≥ 65: 22 (5%), 16 (3%),156 (4%)
Unknown: 4 (1%), 0 (0%), 7 (<1%)
Total ILI Visits: 475 (100%), 488 (100%), 3874 (100%)
ILI Intensity Levels: Minimal
Influenza Geographic Spread: Regional
? Thirteen influenza-associated hospitalizations were reported.
? Twenty-five specimens tested positive for influenza by PCR at the DHMH Laboratories Administration.
? The number of ILI visits to sentinel providers increased slightly over the previous week, but was still below baseline.
? No outbreaks of respiratory disease were reported.
ILINet Sentinel Providers
Thirteen sentinel providers reported a total of 8,368 visits this week. Of those, 114 (1.4%) were visits for ILI. This is below the Maryland baseline of 2.0%.
Visits to Emergency Departments for ILI
Emergency Departments in Maryland reported a total of 44,645 visits this week through the ESSENCE surveillance system. Of those, 584 (1.3%) were visits for ILI.
Clinical Laboratory Influenza Testing
Thirty-four clinical laboratories reported performing 1,096 influenza diagnostic tests, mostly rapid influenza diagnostic tests (RIDT). Of those, 88 (8.0%) were positive for influenza. Of those testing positive, 70 (79.5%) were influenza type A and 18 (20.5%) were influenza type B.
State Laboratories Administration Influenza Testing
The DHMH Laboratories Administration performed a total of 118 PCR tests for influenza. Twenty-five (21.2%) of the specimens tested positive. Of those, 21 (84.0%) were Type A (H1N1), two (8.0%) were type A (H3N2), and two (8.0%) were Type B.
Hospitalizations by Age:
This week, last week, season
Age 0-4: 2, 1, 15
Age 5-17: 1, 2, 5
Age 18-24: 1, 1, 4
Age 25-49: 3, 2, 15
Age 50-64: 4, 1, 15
Age ≥ 65: 2, 1, 20
Total: 13, 8, 74
Influenza-like illness (ILI) intensity: Minimal
Geographic spread: Local
? Eleven influenza-associated hospitalizations were reported.
? Forty specimens tested positive for influenza by PCR at the DHMH Laboratories Administration.
?Two outbreaks of respiratory disease were reported.
? Most ILI indicators decreased or held steady compared to the previous week, while the proportion of specimens testing positive at the state lab and sentinel labs increased.
? Overall, influenza activity remains low across, but more states are reporting increased influenza activity.
Clinical Laboratory Influenza Testing:
Forty clinical laboratories reported performing 1,454 influenza diagnostic tests, mostly rapid influenza diagnostic tests (RIDT). Of those, 112 (7.7%) were positive for influenza. Of those testing positive, 92 (82.1%) were influenza type A and 20 (17.9%) were influenza type B.
State Laboratories Administration Influenza Testing:
The DHMH Laboratories Administration performed a total of 87 PCR tests for influenza. Forty (46.0%) specimens tested positive. Of those, 39 (97.5%) were Type A (H1N1) and one (2.5%) was type A (H3N2). PCR testing is more reliable than RIDT.
• Twenty-three influenza-associated hospitalizations were reported.
• Eighty-two specimens tested positive for influenza by PCR at the DHMH
• Laboratories Administration.
• One outbreak of respiratory disease was reported.
• Overall, ILI indicators have remained relatively steady over the past few weeks, while the proportions of specimens testing positive at the state lab and sentinel labs continue to increase.
ILI Intensity: Minimal
Geographic Spread: Regional
Nine sentinel providers reported a total of 2,092 visits this week. Of those, 92 (4.4%) were visits for ILI. This is above the Maryland baseline of 2.0%.
ILI Visits To Sentinel Providers By Age Group:
This week, last week and season total:
Age 0-4: 16 (17%), 30 (43%), 336 (27%)
Age 5-24: 32 (35%), 23 (33%), 537 (43%)
Age 25-49: 32 (35%), 15 (21%), 294 (23%)
Age 50-64: 10 (11%), 0 (0%), 72 (6%)
Age ≥ 65: 2 (2%), 2 (3%), 24 (2%)
Emergency Departments in Maryland reported a total of 42,983 visits this week through the ESSENCE surveillance system. Of those, 744 (1.7%) were visits for ILI.
Twenty-one influenza-associated hospitalizations were reported. Seventy-seven specimens tested positive for influenza by PCR at the DHMH Laboratories Administration. One outbreak of respiratory disease was reported.
Hospitalizations by age group:
This week, last week, season total:
0-4: 1, 2, 23
5-17: 1, 0, 5
18-24: 7, 6, 29
25-49: 2, 9, 36
50-64: 2, 0, 15 65+: 8, 8, 44 higher than we've generally seen for that age group
Total: 21, 25, 152
Thirty-eight clinical laboratories reported performing 1,830 influenza diagnostic tests, mostly rapid influenza diagnostic tests (RIDT). Of those, 334 (18.3%) were positive for influenza. Of those testing positive, 297 (88.9%) were influenza type A and 37 (11.1%) were influenza type B. The DHMH Laboratories Administration performed a total of 126 PCR tests for influenza. Seventy-seven (61.1%) specimens tested positive. Of those, all 77 (100%) were Type A (H1N1).
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