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 April 19, 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 4/19/14 (n=26,163)  - Cases by County and Influenza Type 

  Influenza Type TOTAL
  A B U  
County 340 10 7 357
ADAMS 214 23 . 237
ALLEGHENY 2255 145 25 2425
ARMSTRONG 151 13 . 164
BEAVER 322 2 1 325
BEDFORD 132 4 6 142
BERKS 726 252 . 978
BLAIR 464 26 120 610
BRADFORD 75 3 1 79
BUCKS 445 143 7 595
BUTLER 522 113 9 644
CAMBRIA 261 19 26 306
CAMERON 21 2 . 23
CARBON 125 33 . 158
CENTRE 398 30 1 429
CHESTER 516 94 10 620
CLARION 175 8 . 183
CLEARFIELD 122 11 3 136
CLINTON 132 1 . 133
COLUMBIA 109 15 . 124
CRAWFORD 494 8 . 502
CUMBERLAND 367 36 5 408
DAUPHIN 587 92 1 680
DELAWARE 587 158 . 745
ELK 68 18 . 86
ERIE 686 5 . 691
FAYETTE 433 40 2 475
FOREST 22 . . 22
FRANKLIN 405 22 1 428
FULTON 102 9 . 111
GREENE 92 8 . 100
HUNTINGDON 232 3 1 236
INDIANA 292 23 2 317
JEFFERSON 150 11 . 161
JUNIATA 94 4 2 100
LACKAWANNA 342 74 . 416
LANCASTER 508 90 . 598
LAWRENCE 68 5 1 74
LEBANON 190 20 . 210
LEHIGH 1358 501 7 1866
LUZERNE 1020 194 2 1216
LYCOMING 275 50 1 326
MCKEAN 267 15 . 282
MERCER 123 4 . 127
MIFFLIN 239 9 1 249
MONROE 208 38 8 254
MONTGOMERY 746 205 6 957
MONTOUR 30 15 1 46
NORTHAMPTON 597 284 6 887
NORTHUMBERLAND 223 38 1 262
PERRY 58 1 1 60
PHILADELPHIA 838 182 . 1020
PIKE 51 10 . 61
POTTER 168 8 . 176
SCHUYLKILL 327 45 . 372
SNYDER 212 25 . 237
SOMERSET 165 21 23 209
SULLIVAN 5 1 . 6
SUSQUEHANNA 52 2 . 54
TIOGA 91 . . 91
UNION 178 11 1 190
VENANGO 89 1 . 90
WARREN 71 1 . 72
WASHINGTON 507 50 . 557
WAYNE 113 16 . 129
WESTMORELAND 584 21 74 679
WYOMING 45 4 . 49
YORK 529 73 9 611
All 22393 3398 372 26163

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=101) as of April 19, 2014

Age Group

# of Deaths

0-4

2

5-9

1

10-18

0

19-24

3

25-49

18

50-64

33

>65

44

Total

101