﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2025v4.2">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2026-09-01T15:28:58-05:00</ReturnTs>
    <TaxPeriodEndDt>2025-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>410746749</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>CLIFTONLARSONALLEN LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>420 SOUTH ORANGE AVENUE SUITE 900</AddressLine1Txt>
        <CityNm>ORLANDO</CityNm>
        <StateAbbreviationCd>FL</StateAbbreviationCd>
        <ZIPCd>32801</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2025-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>760072585</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>TEXAS INFECTIOUS DISEASE SOCIETY</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>TEXA</BusinessNameControlTxt>
      <PhoneNum>2105670990</PhoneNum>
      <USAddress>
        <AddressLine1Txt>7703 FLOYD CURL DR MSC 7881</AddressLine1Txt>
        <CityNm>SAN ANTONIO</CityNm>
        <StateAbbreviationCd>TX</StateAbbreviationCd>
        <ZIPCd>78229</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>LAURA NAJVAR</PersonNm>
      <PersonTitleTxt>EXECUTIVE DIRECTOR/SECRETARY</PersonTitleTxt>
      <PhoneNum>2105670990</PhoneNum>
      <SignatureDt>2026-08-27</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>LACEY M QUATSOE</PreparerPersonNm>
      <PTIN>P01300865</PTIN>
      <PhoneNum>4078021200</PhoneNum>
      <PreparationDt>2026-08-25</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2025</TaxYr>
  </ReturnHeader>
  <ReturnData documentCnt="5">
    <IRS990EZ documentId="RetDoc1234200001" referenceDocumentId="RetDoc1051800001 RetDoc2278000001">
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <WebsiteAddressTxt>TEXASIDSOCIETY.ORG</WebsiteAddressTxt>
      <Organization501c3Ind referenceDocumentId="RetDoc1039100001">X</Organization501c3Ind>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>87369</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ContributionsGiftsGrantsEtcAmt>31600</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>52233</ProgramServiceRevenueAmt>
      <InvestmentIncomeAmt>3536</InvestmentIncomeAmt>
      <TotalRevenueAmt>87369</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>1800</GrantsAndSimilarAmountsPaidAmt>
      <SalariesOtherCompEmplBnftAmt>6000</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>2617</FeesAndOtherPymtToIndCntrctAmt>
      <OtherExpensesTotalAmt>66063</OtherExpensesTotalAmt>
      <TotalExpensesAmt>76480</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>10889</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>133499</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>144388</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>133499</BOYAmt>
        <EOYAmt>144388</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <Form990TotalAssetsGrp>
        <BOYAmt>133499</BOYAmt>
        <EOYAmt>144388</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>133499</BOYAmt>
        <EOYAmt>144388</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <PrimaryExemptPurposeTxt>TO PROMOTE EDUCATION, RESEARCH, AND LEGISLATIVE CHANGES THAT ASSIST TEXAS INFECTIOUS DISEASE PHYSICIANS, NURSES, AND OTHER HEALTH PROFESSIONALS IN PROVIDING EXCELLENT PATIENT CARE AND IMPROVING COMMUNITY HEALTH.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>THE SOCIETY PROVIDES CONTINUING MEDICAL EDUCATION TO MEDICAL DOCTORS WITH AN INTEREST IN CLINICAL INFECTIOUS DISEASE AND ACTS AS A FORUM FOR THE EXCHANGE OF IDEAS. IN 2025, THE SOCIETY HAD 101 MEMBERS. THE SOCIETY SPONSORS AN EDUCATIONAL CONFERENCE WITH CME CREDITS. THERE WERE 102 ATTENDEES IN 2025. IT PUBLISHES A MEMBERSHIP DIRECTORY AND OPERATES A SURVEILLANCE E-MAIL NETWORK FOR THE SHARING OF INFORMATION ON EMERGING INFECTIOUS DISEASE.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>0</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>70050</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>THE SOCIETY PROVIDES FELLOW GRANTS TO ALLOW FOR 7 OR MORE FELLOWS FROM THE TEXAS FELLOWSHIP PROGRAMS TO ATTEND THE TIDS ANNUAL MEETING AND PRESENT A POSTER OR ORAL PRESENTATION FOR EDUCATIONAL PURPOSES. THE GRANT PROVIDES REGISTRATION FOR THE MEETING, 2 NIGHTS HOTEL, AND A $300 TRAVEL GRANT. MONETARY AWARDS ARE GIVEN TO THE TOP 3 EXCEPTIONAL POSTERS.</DescriptionProgramSrvcAccomTxt>
        <GrantsAndAllocationsAmt>1800</GrantsAndAllocationsAmt>
        <ProgramServiceExpensesAmt>2175</ProgramServiceExpensesAmt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>72225</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>TRISH PERL MD</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JASON BOWLING MD</PersonNm>
        <TitleTxt>PAST PRESIDENT</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>1.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>LAURA NAJVAR</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR/SECRETARY</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>12.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>6000</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>JAMES BRAD CUTRELL MD</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>2.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <InfoInScheduleOPartVInd>X</InfoInScheduleOPartVInd>
      <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>0</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>0</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
      <DirectIndirectPltclExpendAmt>0</DirectIndirectPltclExpendAmt>
      <MadeLoansToFromOfficersInd>0</MadeLoansToFromOfficersInd>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <TaxImposedOnOrganizationMgrAmt>0</TaxImposedOnOrganizationMgrAmt>
      <TaxReimbursedByOrganizationAmt>0</TaxReimbursedByOrganizationAmt>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>LAURA NAJVAR</BusinessNameLine1Txt>
        </BusinessName>
        <USAddress>
          <AddressLine1Txt>7703 FLOYD CURL DR MSC 7881</AddressLine1Txt>
          <CityNm>SAN ANTONIO</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>78229</ZIPCd>
        </USAddress>
        <PhoneNum>2105670990</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <DonorAdvisedFndsInd>0</DonorAdvisedFndsInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <TanningServicesProvidedInd>0</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>1</FiledScheduleAInd>
    </IRS990EZ>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>13885</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>20705</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>17735</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>19500</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>31600</CurrentTaxYearAmt>
        <TotalAmt>103425</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>9750</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>24000</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>32325</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>39057</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>52233</CurrentTaxYearAmt>
        <TotalAmt>157365</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>23635</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>44705</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>50060</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>58557</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>83833</CurrentTaxYearAmt>
        <TotalAmt>260790</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <CurrentTaxYearMinus4YearsAmt>225</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>225</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>620</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1330</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1410</CurrentTaxYearAmt>
        <TotalAmt>3810</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <TotalAmt>0</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <CurrentTaxYearMinus4YearsAmt>225</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>225</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>620</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1330</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1410</CurrentTaxYearAmt>
        <TotalAmt>3810</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>256980</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>150</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>213</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1986</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2899</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>3536</CurrentTaxYearAmt>
        <TotalAmt>8784</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>150</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>213</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1986</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2899</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>3536</CurrentTaxYearAmt>
        <TotalAmt>8784</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <OtherIncome509Grp>
        <CurrentTaxYearMinus3YearsAmt>536</CurrentTaxYearMinus3YearsAmt>
        <TotalAmt>536</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>23785</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>45454</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>52046</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>61456</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>87369</CurrentTaxYearAmt>
        <TotalAmt>270110</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.95140</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.95470</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.03250</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.03070</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART III, LINE 12, EXPLANATION OF OTHER INCOME:</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER INCOME - 2022 AMOUNT: $ 536.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleO documentId="RetDoc1051800001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 4 - OTHER INVESTMENT INCOME</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: INTEREST. AMOUNT: 3,536.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 10 - GRANTS AND SIMILAR AMOUNTS PAID</FormAndLineReferenceDesc>
        <ExplanationTxt>ACTIVITY CLASSIFICATION: FELLOW GRANTS TO U.S. BASED INDIVIDUALS. GRANTEE NAME: N/A. GRANTEE RELATIONSHIP: NONE. PROPERTY DESCRIPTION: CASH. AMOUNT GIVEN: 1,800.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990-EZ, PART I, LINE 16 - OTHER EXPENSES</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: CONFERENCES, CONVENTIONS, AND MEETINGS. AMOUNT: 57,623. DESCRIPTION: CME ADMINISTRATIVE FEES. AMOUNT: 4,750. DESCRIPTION: WEB HOSTING. AMOUNT: 1,588. DESCRIPTION: MERCHANT FEES. AMOUNT: 1,634. DESCRIPTION: GIFT CARDS. AMOUNT: 89. DESCRIPTION: POSTER PRIZES. AMOUNT: 375. DESCRIPTION: MISCELLANEOUS. AMOUNT: 4. TOTAL TO FORM 990-EZ, LINE 16: 66,063.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <TransferPrsnlBnftContractsDecl documentId="RetDoc2278000001">
      <DeclarationDesc>THE ORGANIZATION DID NOT, DURING THE YEAR, RECEIVE ANY FUNDS, DIRECTLY,OR INDIRECTLY, TO PAY PREMIUMS ON A PERSONAL BENEFIT CONTRACT.THE ORGANIZATION, DID NOT, DURING THE YEAR, PAY ANY PREMIUMS, DIRECTLY,OR INDIRECTLY, ON A PERSONAL BENEFIT CONTRACT.</DeclarationDesc>
    </TransferPrsnlBnftContractsDecl>
  </ReturnData>
</Return>