Diseases and Conditions > Influenza (Flu) > PA Influenza Weekly Report

2013/14 Influenza Season

The Pennsylvania Department of Health (PADOH) monitors influenza activity throughout the year. A typical influenza surveillance season runs from the beginning of October to September of the following year. For the 2013/14 season, the influenza surveillance season will run from October 2, 2013 through September 30, 2014. During that period, the PA DOH will monitor influenza activity on a daily basis and post weekly flu updates every Tuesday. These updates will provide a summary on:

1. How much influenza is circulating at any given time;

2. When and where influenza activity is occurring; and

3. What types of influenza viruses are circulating;              

 

It is important to note that PA DOH flu numbers only consist of influenza (positive by rapid test, PCR or culture) cases reported to the PA DOH and are only a fraction of the actual burden of illness occurring in the commonwealth at any given time. This is because most persons with the flu (even those who seek healthcare) are diagnosed presumptively and do not have lab tests performed to determine the cause of illness and some people do not go to the doctors when they are ill. Based on CDC projections, we estimate that 5 to 20% (600, 000 to 1,200,000) Pennsylvanians get the flu each year and 200 to 2000 die from complications of influenza. Influenza surveillance summaries for previous seasons are posted on the previous page.

Click here for information regarding influenza vaccine.

 

 Flu Activity Code: REGIONAL (week ending March 29, 2014)

*The flu code is a characterization of the geographic spread of influenza in Pennsylvania. It does not tell how bad one season compares to another. Rather, it shows the level of influenza activity in Pennsylvania counties. The level of activity is classified based on CDC definitions below, which are used by all 50 states to characterize influenza activity*

No Activity

No laboratory-confirmed cases of influenza and no reported increase in the number of cases of ILI.

Sporadic

Small numbers of laboratory-confirmed influenza cases or a single laboratory-confirmed influenza outbreak has been reported, but there is no increase in cases of ILI.

Local

Outbreaks of influenza or increases in ILI cases and recent laboratory-confirmed influenza in a single region of the state.

Regional

Outbreaks of influenza or increases in ILI and recent laboratory confirmed influenza in at least two but less than half the regions of the state with recent laboratory evidence of influenza in those regions.

Widespread

Outbreaks of influenza or increases in ILI cases and recent laboratory-confirmed influenza in at least half the regions of the state with recent laboratory evidence of influenza in the state.

 

Influenza surveillance weeks run from week 40 (which ended October 2, 2013) through week 52 (at the end of 2013) and up from week 1 (in January of 2013) to week 39 (late September of 2014). The data presented below reflect influenza activity during each of the surveillance weeks referred to above and may change from week to week as numbers are adjusted for late reporting, misclassification of cases and errors in classifying county or state of residence.

Table 1. Influenza cases (positive by rapid test, PCR or culture) Reported in Pennsylvania, 9/29/13 to 3/29/14 (n=23,933)  - Cases by County and Influenza Type 

  Influenza Type TOTAL
County A B U  
Unknown 339 2 7 348
ADAMS 199 13 . 212
ALLEGHENY 2223 112 25 2360
ARMSTRONG 149 13 . 162
BEAVER 321 2 1 324
BEDFORD 131 1 6 138
BERKS 710 150 . 860
BLAIR 462 22 120 604
BRADFORD 75 2 . 77
BUCKS 405 59 7 471
BUTLER 504 95 8 607
CAMBRIA 258 18 26 302
CAMERON 21 1 . 22
CARBON 122 12 . 134
CENTRE 395 15 1 411
CHESTER 479 42 9 530
CLARION 170 7 . 177
CLEARFIELD 120 8 3 131
CLINTON 132 . . 132
COLUMBIA 104 5 . 109
CRAWFORD 478 7 . 485
CUMBERLAND 366 14 4 384
DAUPHIN 578 25 1 604
DELAWARE 511 76 . 587
ELK 68 17 . 85
ERIE 683 5 . 688
FAYETTE 428 29 1 458
FOREST 20 . . 20
FRANKLIN 398 12 1 411
FULTON 96 1 . 97
GREENE 92 7 . 99
HUNTINGDON 229 1 1 231
INDIANA 279 21 2 302
JEFFERSON 150 9 . 159
JUNIATA 91 1 2 94
LACKAWANNA 336 41 . 377
LANCASTER 498 45 . 543
LAWRENCE 66 . 1 67
LEBANON 187 10 . 197
LEHIGH 1293 274 6 1573
LUZERNE 996 113 2 1111
LYCOMING 274 42 1 317
MCKEAN 267 11 . 278
MERCER 122 2 . 124
MIFFLIN 237 5 1 243
MONROE 198 16 8 222
MONTGOMERY 689 93 6 788
MONTOUR 28 6 1 35
NORTHAMPTON 559 204 5 768
NORTHUMBERLAND 215 13 1 229
PERRY 58 1 1 60
PHILADELPHIA 736 56 . 792
PIKE 48 2 . 50
POTTER 162 3 . 165
SCHUYLKILL 314 17 . 331
SNYDER 211 18 . 229
SOMERSET 164 17 23 204
SULLIVAN 5 1 . 6
SUSQUEHANNA 51 1 . 52
TIOGA 88 . . 88
UNION 170 3 1 174
VENANGO 89 1 . 90
WARREN 70 2 . 72
WASHINGTON 490 42 . 532
WAYNE 107 3 . 110
WESTMORELAND 581 15 74 670
WYOMING 44 2 . 46
YORK 521 46 8 575
All 21660 1909 364 23933

Table 2. Number of PA Influenza Cases by week of first report

 

Table 3. Season-to-Date Influenza Sub-Typing Results from state public health lab

County

 

 

Chart 4: Comparison of PA-NEDSS Influenza Cases (All Types) in Current Season to the 6 Previous Seasons

 

 

Table 5 : Influenza-related Deaths Reported in Pennsylvania by Age Group (n=98) as of March 29, 2014

Age Group

# of Deaths

0-4

2

5-9

1

10-18

0

19-24

3

25-49

17

50-64

33

>65

42

Total

98