Iowa Influenza Surveillance Network (IISN) Influenza like Illness (ILI ...

IowaInfluenzaSurveillanceNetwork(IISN) Influenza-likeIllness(ILI)andOtherRespiratoryViruses

WeeklyActivityReport FortheweekendingFebruary12,2022-MMWRWeek6

Alldatapresentedinthisreportareprovisionalandmaychangeasadditionalreportsarereceived

QuickStatsforWeek6

PredominantFluat SHL

No Flu Detected

Lab Survey Flu Positive %

Antigen 13.9% Molecular 7.6%

Hospitalization Rateper10,000

79.32

Outpatient ILI %

2.46%

Cumulative Flu Deaths

AllAges

18

PredominantNonflu

Rhinovirus/Enterovirus PCR

10.1% +

Schools Reporting 10% Illness

23

WeeklySchool Illness %

3.4%

LongTerm Care Outbreaks

0

Cumulative Pediatric Flu Deaths

0

FluDeathNote:Deathsareconsideredinfluenza-associatedwheninfluenzaislistedonthedeathcertificate.Thisis anunderestimateofinfluenza-relateddeaths.Cumulativemortalitytotalsarefrom 10/3/21tothecurrentweek.

NOTE:Schooldataforweek52-53arelimitedduetoholidayclosings IowaStatewideActivitySummary

OverallInfluenzaActivity:Moderate

FlutestsatSHL:TheStateHygienicLaboratoryreported0influenzapositivespecimensfrom specimenssubmitted.

AntigenTests:Therewere87of626(13.9%)influenzaantigentestsreportedaspositiveontheIowarespiratory virus survey.

MolecularTests:Therewere453of5,945(7.6%)influenzamoleculartestsreportedaspositiveontheIowa respiratory virus survey.

FluHospitalizations:14influenzarelatedhospitalizationswerereportedfrom sentinelsites.

OutpatientInfluenza-like-illness(ILI):TheproportionofoutpatientvisitsduetoILIwas2.46%,whichisabovethe regionalbaselineof1.7%.

FluDeaths:3inluenza-associateddeathswerereportedthisweek. SchoolsReporting10% Illness:23schoolsreported10% ofstudentsabsentduetoillnessatleastoncethisweek.

Outbreaks:0long-term careinfluenzaoutbreakswerereportedthisweek.

Rhinovirus/EnterovirusPCRwasthemostfrequentlyreportednon-influenzaandnon-COVID19respiratorytesting targetreportedontheIowarespiratoryvirustestingsurveythisweekwith143of1,417testspositive(10.1%).

InternationalInfluenzaActivitySummary-WHO

DataSource:GlobalInfluenzaandResponseSystem (GISRS),FluNet(who.int/flunet). Visit.

NationalInfluenzaLikeIllness(ILI)Activity-CDC

Thismapshowsinfluenza-likeillness,whichisdeterminedbysymptomssuchasfever,cough,andsorethroatthat canbecausedbyanumberofpathogensinadditiontoinfluenza(e.g.,COVID-19).Detailedinformationcanbefound onlineatflu/weekly/.

InfluenzaTestingattheStateHygienicLaboratoryattheUniversityofIowa(SHL)

CumulativeInfluenzaVirusesDetectedbySHLbyAgeGroup(10/3/2021-CurrentWeek)

Influenza A

Influenza B

Age Group

A(H1N1) pdm09

A(H3)subtAypneodtAVariant Total

B Victoria

B Yamagata

B not subtyped

0-4 5-17 18-24 25-49 50-64 65 + Total

0

15

0

0

15

0

0

0

0

26

0

0

26

0

0

0

0

36

1

0

37

0

0

0

0

10

0

0

10

0

0

0

0

9

0

0

9

0

0

0

0

14

0

0

14

0

0

0

0

110

1

0

111

0

0

0

Total

0 0 0 0 0 0 0

TableNote:Cellcountsofthreeorlessaresometimessuppressedtoprotectconfidentiality.Totalsbyagemaynot adduptototalsbysubtype/lineageduetomissingageinformation.OnlycasesofIowaresidentsareincluded. Specimenslistedas"notsubtyped"maybependingorwerenotabletobesubtypedduetoweakpositivelab results.Thiscanbeduetopoorcollection,timingofcollectionorstageofinfection.

InfluenzaVirusesDetectedbySHLbyWeek(10/3/21-CurrentWeek)

A(H1N1)pdm09 A(H3)

B Victoria

BYamagata

PositiveResults

20

15

10

5

0 Oct16,21

Dec11,21

Feb5,22

Apr2,22

May28,22

WeekEndingDate

Jul23,22 Sep17,22

GraphNote:Onlyvirusesthathavebeenassignedasubtypeorlineageareshown.

SHLFluTestingNote:TheStateHygienicLaboratory(SHL)istheprimarylaboratoryinIowacharacterizing specimensforinfluenzasurveillance.SHLreportsthenumberoftestsperformedandthetypeandsubtype/lineage ofpositiveteststotheinfluenzasurveillancenetworkdaily.SHLalsosendsaportionofspecimenstoCDCfor further characterization.

PositivePercentbyFluType

NumberofInfluenzaMolecularTestsandPositivePercentage

15K

Flu A

Flu B

50.0%

NumberTestsbyGroup

10K 5K

Lab Survey Flu Positive %

Molecular 7.6%

40.0% 30.0% 20.0% 10.0%

0K

0.0%

Oct16,21 Dec11,21 Feb5,22

Apr2,22 End Date

May28,22

Jul23,22 Sep17,22

PercentPositive

NumberTestsbyGroup

NumberofInfluenzaAntigenTestsandPositivePercentage

Flu A Ag

Flu B Ag

2K

40%

Lab Survey Flu Positive %

1K

20%

Antigen 13.9%

0K Oct16,21 Dec11,21

Feb5,22

Apr2,22 End Date

May28,22

0% Jul23,22 Sep17,22

IowaRespiratorySurvey-Influenza

FluTestsandPositivitybyRegion-CurrentWeek

Flu Region

1-C 2-NE 3-NW 4-SW 5-SE 6-E Total

Flu A

Antigen

Flu B

Number Positive Number Positive PositivesPercentby.. Positives Percentby..

28

9.4%

5

17.9%

44

19.3%

0

2

4.7%

2

7.1%

81

12.9%

3

1.0%

0

0.0%

3

1.3%

0

0

0.0%

0

0.0%

6

1.0%

Flu A

Molecular

Flu B

Number Positive Number Positive PositivesPercentby.. PositivesPercentby..

47 53 30

4 0 314 448

5.2% 18.3% 29.7%

7.3%

6.8% 7.5%

0

0.0%

1

0.3%

0

0.0%

0

0.0%

0

4

0.1%

5

0.1%

TableNote:Onlytestswithatleastonepositivethisweekareshown.

RespiratorySurveyNote:IDPHandSHLrunaweeklyweb-basedsurveyprogram wherelaboratoriansreportthe numberofinfluenzaandrespiratorysyncytialvirus(RSV)rapidtestsperformedandthenumberoftestspositive. Facilitiesreportedthetotalnumberoftestsandpositiveresults,notindividual-levelinformation.

OutpatientHealthCareProviderSurveillanceProgram (ILINet) PercentOfOutpatientVisitsAttributedtoInfluenza-likeIllness(ILI)asReportedbyILINetSites

2017-18

2018-19

2019-20

2020-21

2021-22

ILIbySeason

10.0%

5.0%

WeekEnding:2/12/2022 ILI% 2.5%

ILIPctCurrentSeason

0.0% 41 44 47 50 1 4 7 10 13 16 19 22 25 28 31 34 37

ILIRecentWeeks

MMWR Week

4 5 6

End Date

1/29/2022 2/5/2022 2/12/2022

Age 0-4 11 12 16

Age 5-24 44 52 53

Age 25-49 25 24 19

Age 50-64

Age 65 and older

20

7

10

8

13

9

TotalILI 107 106 110

ILIPct 2.37% 3.37% 2.46%

OutpatientILINote:OutpatienthealthcareproviderswhoparticipateintheILINet(anationalinfluenzasurveillanceprogram)report thenumberofpatientsseenwithinfluenza-likeillnessandthetotalnumberofpatientvisitseachweek.Thissystem isakeypartof Iowa'sinfluenzasurveillance.Iowahealthcareprovidersinterestedinjoiningthissurveillanceprogram shouldcontactAndyWeigelat 515-322-1937orandy.weigel@idph.formoreinformation.TheILIDefinitionhaschangedfor20121-22sothatpersonswith ILIsymptoms(cough,sorethroat,fever)willbecountedevenifpositiveforotherresperitoryillness(e.g.,COVID-19)whichmakes comparisonacrossseasonsdiffi cult.

IowaDepartmentofPublicHealthDataTrackingPortal-FluVaccine

VisittheIowaPublicHealthTrackingPortal InfluenzaVaccineDatapagefordetailson IowaFluVaccineCoverage:

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download