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  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableInPeriodWeightedAverageGrantDateFairValue" id="xwel_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableInPeriodWeightedAverageGrantDateFairValue" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashHeldInOverseasAccounts" id="xwel_CashHeldInOverseasAccounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element name="RightOfUseAssetSurrenderedInExchangeForTerminationOfOperatingLeaseLiability" id="xwel_RightOfUseAssetSurrenderedInExchangeForTerminationOfOperatingLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
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  <xsd:element name="PalladiumCapitalAdvisorsLlcWarrantsMember" id="xwel_PalladiumCapitalAdvisorsLlcWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="IncreaseDecreaseInLeaseLiabilities" id="xwel_IncreaseDecreaseInLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element name="AccountsPayableAccruedExpensesAndOtherMember" id="xwel_AccountsPayableAccruedExpensesAndOtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="StockIssuedDuringPeriodSharesWarrantsExercised" id="xwel_StockIssuedDuringPeriodSharesWarrantsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="AccruedLiabilityForUnredeemedGiftCards" id="xwel_AccruedLiabilityForUnredeemedGiftCards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="TwoThousandTwentyStockOptionPlanMember" id="xwel_TwoThousandTwentyStockOptionPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="XpresTest2020EquityIncentivePlanMember" id="xwel_XpresTest2020EquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DirectorsEmployeesAndConsultantsMember" id="xwel_DirectorsEmployeesAndConsultantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="RightOfUseAssetObtainedInExchangeForNewAndModifiedOperatingLeaseLiability" id="xwel_RightOfUseAssetObtainedInExchangeForNewAndModifiedOperatingLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element name="RevenueContractAmountNotYetRecognized" id="xwel_RevenueContractAmountNotYetRecognized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
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  <xsd:element name="January2021PlacementAgentTailFeeMember" id="xwel_January2021PlacementAgentTailFeeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="February2021PlacementAgentWarrantsOneMember" id="xwel_February2021PlacementAgentWarrantsOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="February2021PlacementAgentWarrantsTwoMember" id="xwel_February2021PlacementAgentWarrantsTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="RepaymentOfPaycheckProtectionProgram" id="xwel_RepaymentOfPaycheckProtectionProgram" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ShareRepurchaseProgramMember" id="xwel_ShareRepurchaseProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAndVestedIntrinsicValue" id="xwel_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingAndVestedIntrinsicValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element name="NonVestedRSUsMember" id="xwel_NonVestedRSUsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseReturnToProvisionAdjustmentAmount" id="xwel_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseReturnToProvisionAdjustmentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationAdditionalEarnoutLiability" id="xwel_BusinessCombinationAdditionalEarnoutLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="CreditCardProcessingFees" id="xwel_CreditCardProcessingFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="PropertyPlantEquipmentCapitalExpenditure" id="xwel_PropertyPlantEquipmentCapitalExpenditure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedInPeriodFairValue" id="xwel_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantedInPeriodFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationTaxCreditsAndAdjustmentsOtherAmount" id="xwel_EffectiveIncomeTaxRateReconciliationTaxCreditsAndAdjustmentsOtherAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionWeightedAverageExercisePricePerShare" id="xwel_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionWeightedAverageExercisePricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionWeightedAverageExercisePricePerShareExpired" id="xwel_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionWeightedAverageExercisePricePerShareExpired" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="GcgConnectLlcDBAHyperpointeMember" id="xwel_GcgConnectLlcDBAHyperpointeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationAdditionalContingentConsiderationPayable" id="xwel_BusinessCombinationAdditionalContingentConsiderationPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
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  <xsd:element name="EzraT.ErnstMember" id="xwel_EzraT.ErnstMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="TgManagementPhlbbMember" id="xwel_TgManagementPhlbbMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsUnBilledReceivables" id="xwel_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsUnBilledReceivables" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="StockVestedDuringPeriodSharesRestrictedStockAward" id="xwel_StockVestedDuringPeriodSharesRestrictedStockAward" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="NumberOfEqualQuarterlyVestingInstallment" id="xwel_NumberOfEqualQuarterlyVestingInstallment" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="AdjustmentsToAdditionalPaidInCapitalGrantOfStockOptionsForServices" id="xwel_AdjustmentsToAdditionalPaidInCapitalGrantOfStockOptionsForServices" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CdcProgramOptionsAndPublicHealthServicesMember" id="xwel_CdcProgramOptionsAndPublicHealthServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BioSurveillanceMonitoringServiceMember" id="xwel_BioSurveillanceMonitoringServiceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="PassengerAndAircraftWastewaterSampleCollectionMember" id="xwel_PassengerAndAircraftWastewaterSampleCollectionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TravelerEnrollmentInitiativesMember" id="xwel_TravelerEnrollmentInitiativesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ImpairmentOfLongLivedAssetsMember" id="xwel_ImpairmentOfLongLivedAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AdditionalPayrollTaxes" id="xwel_AdditionalPayrollTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AccruedSettlementAmount" id="xwel_AccruedSettlementAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
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  <xsd:element name="AccruedLiabilitiesAndOtherLiabilitiesDisclosureTextBlock" id="xwel_AccruedLiabilitiesAndOtherLiabilitiesDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ScheduleOfAccruedLiabilitiesAndOtherLiabilitiesTableTextBlock" id="xwel_ScheduleOfAccruedLiabilitiesAndOtherLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ThresholdValueOfShareRepurchases" id="xwel_ThresholdValueOfShareRepurchases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxReconciliationAdjustmentJointVentureBasis" id="xwel_EffectiveIncomeTaxReconciliationAdjustmentJointVentureBasis" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="IncomeTaxReconciliationChangeInStateDeferredRate" id="xwel_IncomeTaxReconciliationChangeInStateDeferredRate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="IncomeTaxReconciliationAssetImpairmentAdjustment" id="xwel_IncomeTaxReconciliationAssetImpairmentAdjustment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FairValueMeasurementAndMeasurementInputsAcquiredIntangibleAssetsTableTextBlock" id="xwel_FairValueMeasurementAndMeasurementInputsAcquiredIntangibleAssetsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="MeasurementInputAttritionRateMember" id="xwel_MeasurementInputAttritionRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MeasurementInputExistingCustomerGrowthMember" id="xwel_MeasurementInputExistingCustomerGrowthMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MeasurementInputBusinessDevelopmentExpenseForNewCustomersMember" id="xwel_MeasurementInputBusinessDevelopmentExpenseForNewCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MeasurementInputRevenueAttributableToIntangibleAssetsMember" id="xwel_MeasurementInputRevenueAttributableToIntangibleAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MeasurementInputRoyaltyRateMember" id="xwel_MeasurementInputRoyaltyRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AcquiredFiniteLivedIntangibleAssetsMeasurementInput" id="xwel_AcquiredFiniteLivedIntangibleAssetsMeasurementInput" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
</xsd:schema>
