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      <TotalRevenuePerForm990Amt>1013907</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>1547725</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>115750</DonatedServicesUseFcltsAmt>
      <ExpensesNotReportedAmt>115750</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>1431975</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>1431975</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X : FIN48 Footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization is exempt from income tax under Section 501(c)(3) of the Internal Revenue Code and is classified as other than a private foundation. However, income from certain activities, primarily advertising income, is not directly related to the Organizations tax-exempt purpose and is subject to taxation as unrelated business income. As of December 31, 2016, the Organization had a tax asset of $1,557 for actual unrelated business income tax (UBIT) in excess of estimated payments. Estimated tax payments made in 2016 and prior year overpayments applied to 2016 tax totaled $2,620. The total unrelated business income tax expense for the year ended 2016 was $1,063. Management has reviewed all tax positions recognized in previously filed tax returns in the U.S. federal and state jurisdictions and those expected to be taken in future tax returns. As of December 31, 2016, the Organization had no amounts related to unrecognized income tax benefits and no amounts related to accrued interest and penalties.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="IRS990ScheduleF" softwareId="16000303" softwareVersionNum="2016v3.0">
      <GrantRecordsMaintainedInd>true</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Middle EAst</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Program Services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>WAO Int'l Scientific Conf.</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>747542</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>HAE Alliance Meeting</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>27410</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Mexico</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>program services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Emerging Societies</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>16165</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>South America</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>1</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Program Services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Editorial Stipend</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>6000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Europe</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>2</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>program Services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Journal Editorial</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>9500</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalEmployeesCnt>3</SubtotalEmployeesCnt>
      <TotalEmployeeCnt>3</TotalEmployeeCnt>
      <SubtotalSpentAmt>806617</SubtotalSpentAmt>
      <TotalSpentAmt>806617</TotalSpentAmt>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>JOURNAL EDITORIAL</TypeOfAssistanceTxt>
        <RegionTxt>EUROPE</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>9500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>WIRE</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>FMV</ValuationMethodUsedDesc>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>website - editorial stipend</TypeOfAssistanceTxt>
        <RegionTxt>South American</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>6000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>Wire</MannerOfCashDisbursementTxt>
        <ValuationMethodUsedDesc>fmv</ValuationMethodUsedDesc>
      </ForeignIndividualsGrantsGrp>
      <TransferToForeignCorpInd>false</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>false</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>false</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>false</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>false</ForeignPartnershipInd>
      <BoycottCountriesInd>false</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 2 - Grantmakers Explanation For Monitoring Use of Funds Outside US</FormAndLineReferenceDesc>
        <ExplanationTxt>WAO has an awards committee that is responsible for reviewing and determining each award category. The awards committee also selects the award winners by way of vote.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleF>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="16000303" softwareVersionNum="2016v3.0">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d: Other Program Services Description</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER PROGRAM SERVICES 4: World Allergy Forum, World Allergy Day Booth, Website, Emerging Society Program, Collaborative on Severe Asthma Project (COSA), HAE Alliance</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 3: Description of Delegated Duties to Management Company</FormAndLineReferenceDesc>
        <ExplanationTxt>WAO contracts with Executive Director Inc. (A for-profit Management Company) to provide office facilities, management, record keeping, accounting, storage, other significant services, plus related overhead costs</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6: Explanation of Classes of Members or Shareholder</FormAndLineReferenceDesc>
        <ExplanationTxt>Various allergy related societies and associations are members of WAO and are referred to as "Member Societies."</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7a: How Members or Shareholders Elect Governing Body</FormAndLineReferenceDesc>
        <ExplanationTxt>Yes, the member societies elect the governing body.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7b: Describe Decisions of Governing Body Approval by Members or Shareholders</FormAndLineReferenceDesc>
        <ExplanationTxt>Some board decisions must be ratified by the House of Delegates. Main responsibilities include ratification to any bylaw changes and ratification of the election of Board Members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b: Form 990 Review Process</FormAndLineReferenceDesc>
        <ExplanationTxt>The 990 is made available to the entire board before it gets filed. A sub-committee of the board will review the document in-depth and make a recommendation to the board to approve the 990 before its gets filed. An officer of the board then signs the 990.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c: Explanation of Monitoring and Enforcement of Conflicts</FormAndLineReferenceDesc>
        <ExplanationTxt>Disclosure by Board Members must be made in writing through the use of an official WAO Disclosure Form. A completed form must be returned prior to the commencement of WAO term of office. Such disclosure must be updated whenever circumstances require or once per calendar year, whichever is sooner. A member with a conflict is restricted from participation in the governing body's deliberations where the conflict exists.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a: Compensation Review &amp; Approval Process - CEO, Top Management</FormAndLineReferenceDesc>
        <ExplanationTxt>WAO is managed by Executive Director Incorporation, a for-profit management company. WAO has no official employees, because all staff assigned to WAO are employees of the management company. WAO gives it's President a $20,000 Presidential Stipend each year, which is an amount pre-approved by the Board of Directors.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b: Compensation Review and Approval Process for Officers and Key Employees</FormAndLineReferenceDesc>
        <ExplanationTxt>WAO is managed by Executive Director Incorporation, a for-profit management company. WAO has no official employees, because all staff assigned to WAO are employees of the management company. WAO gives it's President a $20,000 Presidential Stipend each year, which is an amount pre-approved by the Board of Directors.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19: Other Organization Documents Publicly Available</FormAndLineReferenceDesc>
        <ExplanationTxt>WAO's 990 is available to the public upon request. WAO's policies are either posted on the website and those that are not posted are available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>