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REVISTA

BRASILEIRA

DE

REUMATOLOGIA

ww w . r e u m a t o l o g i a . c o m . b r

Original

article

Vaccination

in

patients

from

Brasília

cohort

with

early

rheumatoid

arthritis

Luciana

Feitosa

Muniz

,

Carolina

Rocha

Silva,

Thaís

Ferreira

Costa,

Licia

Maria

Henrique

da

Mota

HospitalUniversitáriodeBrasília,UniversidadedeBrasília,Brasília,DF,Brazil

a

r

t

i

c

l

e

i

n

f

o

Articlehistory:

Received15June2012 Accepted7April2014

Availableonline21August2014

Keywords:

Vaccine

Earlyrheumatoidarthritis Brazilianpopulation

a

b

s

t

r

a

c

t

Introduction:Patientswithadiagnosisofrheumatoidarthritis(RA)areatincreasedriskof infections.Vaccinationisarecommendedpreventivemeasure.Therearenostudies evalu-atingthepracticeofvaccinationinpatientswithearlyRA.

Objectives: Toevaluatethefrequencyofvaccinationandtheorientation(bythedoctor)about vaccinesamongpatientswithearlyRAdiagnosis.

Methods:Cross-sectionalstudyincludingpatientsfromtheearlyRABrasiliacohort. Demo-graphicdata,diseaseactivityindex(DiseaseActivityScore28–DAS28),functionaldisability (HealthAssessmentQuestionnaire–HAQ),anddataontreatmentandvaccinationafter diagnosisofRAwereanalyzed.

Results:Sixty-eight patients wereevaluated,94.1% women, mean age 50.7±13.2 years. DAS28was3.65±1.64,andHAQwas0.70.Mostpatients(63%)hadvaccinationcard.Only fivepatients(7.3%)werebriefedbythedoctorabouttheuseofvaccines.Patientswere vac-cinatedforMMR(8.8%),tetanus(44%),yellowfever(44%),hepatitisB(22%),influenza(42%), H1N1(61.76%),pneumonia(1.4%),meningitis(1.4%),andchickenpox(1.4%).Allpatients vac-cinatedwithliveattenuatedviruswereundergoingimmunosuppressivetherapy,andwere vaccinatedinadvertently,withoutmedicalsupervision.Therewasnoassociationbetween theuseofanyvaccineanddiseaseactivity,functionaldisability,yearsofeducation,lifestyle, andcomorbidities.

Conclusion: Patientswereinfrequentlybriefedbythephysicianregardinguseofvaccines, with highfrequencyofinadvertent vaccinationwithlive attenuatedcomponent,while immunizationwithkilledviruswasbelowtherecommendedlevel.

©2014ElsevierEditoraLtda.Allrightsreserved.

DOIoforiginalarticle:http://dx.doi.org/10.1016/j.rbr.2014.04.002.

Correspondingauthor.

E-mail:lucianamuniz@yahoo.com.br(L.F.Muniz). http://dx.doi.org/10.1016/j.rbre.2014.04.002

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Vacinac¸ão

em

pacientes

da

Coorte

Brasília

de

artrite

reumatoide

inicial

Palavraschave:

Vacina

Artritereumatoideinicial Populac¸ãobrasileira

r

e

s

u

m

o

Introduc¸ão: Ospacientes comdiagnósticode artrite reumatoide(AR)apresentam risco aumentado deinfecc¸ões.A vacinac¸ãoéumamedidapreventivarecomendada. Nãohá estudosavaliandoapráticadavacinac¸ãonospacientescomARinicial.

Objetivos:Avaliarafrequênciadevacinac¸ãoeaorientac¸ão(feitapelomédico)sobrevacinas entreospacientescomdiagnósticodeARinicial.

Métodos:EstudotransversalincluindopacientesdacoorteBrasíliadeARinicial.Foram anal-isadosdadosdemográficos,índicedeatividadedadoenc¸a(DiseaseActivityScore28–DAS28), incapacidadefuncional(HealthAssessmentQuestionnaire–HAQ),dadossobretratamentoe vacinac¸ãoapósodiagnósticodaAR.

Resultados: Foramavaliados68 pacientes,sendo94,1% mulheres,comidade média de 50,7±13,2anos.ODAS28foide3,65±1,64,eoHAQde0,70.Amaioriadospacientes(63%) possuíacartãovacinal.Apenascincopacientes(7,3%)foramorientadospelomédicosobre usodasvacinas.Ospacientesforamvacinadosparatrípliceviral(8,8%),tétano(44%),febre amarela(44%),hepatiteB(22%),gripe(42%),influenzaH1N1(61,76%),pneumonia(1,4%), meningite(1,4%)evaricela(1,4%).Todosospacientesvacinadoscomvírusvivoatenuado estavamemusodeimunossupressoresereceberamasvacinasdeformainadvertida,sem orientac¸ãomédica.Nãohouveassociac¸ãoentreousodenenhumavacinaeatividadeda doenc¸a,incapacidadefuncional,anosdeescolaridade,hábitosdevida,comorbidades.

Conclusão: Ospacientesforampoucoorientadospelomédicocomrelac¸ãoaousodas vaci-nas,comelevadafrequênciadevacinac¸ãoinadvertidacomcomponentevivoatenuado, enquantoaimunizac¸ãocomvírusmortosficouaquémdorecomendado.

©2014ElsevierEditoraLtda.Todososdireitosreservados.

Introduction

Infectionsareanimportantcauseofmorbidityand mortal-ityinpatientswithrheumatoidarthritis(RA).1Itisestimated

thatthesepatientshaveatwo-foldriskofdeveloping infec-tionwhencomparedtohealthysubjectsofthesamesexand age.Theincreasedinfectioussusceptibilityisduenotonlyto thetreatmentused,buttothediseaseitselfandtoassociated comorbidities.2 Infections occur morefrequently in joints,

bones,skin,softtissues,andrespiratorytract,2being

respon-sible,atleastinpart,foranincreaseinmortalityinpatients withRA,especiallywhentheyoccurinthegenitourinaryand bronchopulmonarytracts.3–6

Vaccination is the primary preventive measure against infectiousdiseases.7InpatientswithRA,dependingonthe

stateofimmunosuppression,theimmunogenicityofthe vac-cinationmaybereduced,butisstilleffective.8Therearesome

casesofRAreportedfollowingtheuseofthevaccine, espe-ciallyagainsthepatitisB,butthereisnoevidenceofacausal relationshipestablished.Thus,currentlytheadministrationof mostvaccinesrecommendedbythenationalimmunization schedulecanbeperformedsafely withnoeffectondisease activity.7–9

Theuseofvaccinesnotcontaininglivingorganisms,such asthose forinfluenza(intramuscular),pneumonia,tetanus, diphtheria,pertussis,HaemophilusinfluenzaetypeB(Hib), hep-atitisAandBvirus,polio(inactivated–IPV),meningitisand humanpapillomavirus (HPV),isrecommendedinpatients withrheumaticdiseases,includingRA.8,10Amongthose,the

influenzaandpneumococcalvaccinesarethemostsuitable, withahigherlevelofevidenceregardingsafetyandefficacy. Allvaccinesshouldbeadministeredpreferablybeforethestart oftreatmentwithsyntheticor biologicaldisease-modifying antifheumaticdrugs(DMARDs),totrytoachieveanadequate immuneresponse.8,11

Theattenuatedlivevaccinesshouldbeavoided,whenever possible,inpatientswithrheumaticdiseases.8Includedinthis

grouparethefollowingvaccines:MMR(measles,mumps,and rubella),BCG,influenza(nasal),chickenpox,shingles,typhoid, polio (OPV), smallpoxandyellow fever.However,onemust makeanindividualizedassessmentofpatients,considering the degreeof immunosuppressionand the risk factors for acquiringtheseinfections.8,12,13

Despite therecommendationsfortheuseofvaccinesin patients with rheumatic diseases, the frequency of vacci-nation issuboptimal, reaching amaximum of20%-35% in immunosuppressed patients.14 However, few studies have

evaluatedthevaccinationcoverageofRApatients,withmost studiesevaluating onlyinfluenzaorantipneumococcal vac-cines.

The only study evaluating vaccination in patients with earlyRAshowedthattheresponseofpneumoniavaccinewas lowerthanthatseeninthenormalpopulation.Moreover,that studyalsonotedthattheadditionofinfliximabtothetherapy withmethotrexatedidnotaffecttheresponsetothevaccine.15

TheBrazilianSocietyofRheumatologyhasrecentlyissued recommendationsonvaccinationinpatientswithRA.16

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Thus,thisstudyaimstoevaluatethefrequencyof vacci-nationamongpatientswithearlyRAdiagnosisandverifythe orientationregardingtheuseofvaccinesgivenbydoctorsto patients.

Patients

and

methods

Across-sectionalstudyfromFebruary 2012toJune2012,as partoftheBrasiliaCohortofEarlyRheumatoidArthritis,was carriedout.17–20 DatacollectionwasperformedattheClinic

ofRheumatology,HospitalUniversitáriodeBrasília, Universi-dadedeBrasília(HUB/UnB).Weincludedpatientsolderthan18 yearsdiagnosedwithearlyRA(lessthanoneyearofsymptoms atdiagnosis).

Patientsparticipatedvoluntarilyinthestudy,after clarifi-cationonthecontentoftheresearchandaftersigningafree informedconsentform.ThestudywasapprovedbytheEthics CommitteeoftheFacultyofMedicine,UniversidadedeBrasília (CEP/FM-028/2007).

Allparticipantswereassessedbydirectinterviewinroutine outpatientconsultations.Thevaccinationcard,when avail-able,wascheckedbyevaluatingthosevaccinesusedafterthe diagnosisofRA.Ifthesepatientsdidnotpossessthe vaccina-tioncard,theywereaskedspecificallyabouteachandevery oneof the national immunization schedule recommended vaccinesforadultsandelderlypatients:seasonalinfluenza, 23-valentpneumococcal–Pn23,MMR,tetanus-diphteria(Td), hepatitisB,andyellowfever.21Moreover,theywereevaluated

withrespecttotheuseofothervaccines:measles, meningo-coccal,and humanpapillomavirus(HPV) vaccines.Patients were also asked if they had received some guidance from theaccompanyingphysicianonwhichvaccinestheywould orwouldnotuse.

Informationaboutage,timesincediagnosis,disease activ-ity index (Disease Activity Score 28 – DAS28), functional disability questionnaire (Health Assessment Questionnaire – HAQ), use of synthetic or biologic DMARDs (medication, dose),lifestyle (physical activity,currentor previous smok-ing),education,andcomorbiditieswerealsoobtainedthrough questionnairesandmedicalrecordreviews.Patientswerethen divided into groups, accordingto whether ornot theyhad receivedeachofthevaccineslistedabove.

Descriptivestatistical analysiswas usedtoevaluatethe generalcharacteristicsofthestudypopulation.TheStudent’s

t-testorMann-Whitneytestwasusedtoanalyzecontinuous variables.Categoricalvariableswereanalyzedbychi-squared orFisher’sexacttest,whenappropriate.Thesignificancelevel of5%(p<0.05)wasusedforallstatisticaltests.

Results

Sixty-eightpatientswithearlyRAwereevaluated.The gen-eral characteristics of the patients are shown in Table 1. Regardingthetreatmentwithimmunosuppressivedrugs,55 (80%)patientsweretakingmethotrexate,18(26%) antimalar-ialdrugs,17(25%)leflunomide,8(11%)sulfasalazine,13(19%) prednisone,6(8.8%)infliximab,1(1.4%)etanercept,2(2.9%) adalimumab,4(5.8%)rituximab,and2(2.9%)abatacept.

Table1–Generalcharacteristicsofpatientsdiagnosed withearlyRAevaluatedforvaccination.

Characteristics N(%)ormean±standard deviation(n=68)

Women 64(94.1%)

Age(years) 50.7+13.2

Timesincediagnosis(years) 6+2.8

Schooling(years) 8.2+3

Treatment

SyntheticDMARDs 67(98.5%)

BiologicalDMARDs 14(20.5%)

DAS28 3.65+1.64

HAQ 0.70+0.6

VaccinationCard 48(63%)

Of the total group, only five patients (7.3%) had been briefed by the doctor about the use of vaccines. Patients whounderwentvaccinationwithoutreceivingspecific med-ical recommendation made it on their own, inadvertently, at the suggestion of the media or of third parties (rela-tives/neighbours/acquaintances).

AftertheRAdiagnosis,theuseofsomekindofinactivated orrecombinantvaccinewasobservedin57(84%)patients;and theuseofkindofliveattenuatedvaccinewasobservedin32 (47%)patients.Thevaccinationwascarriedoutasfollows:6 (8.8%)forMMR(measles,rubella,andchickenpox),30(44%)for dT,30(44%)foryellowfever,15(22%)forhepatitisB,29(42%) forinfluenza,42(61.7%)forH1N1,4(5.8%)forpneumonia,1 (1.4%)formeningitis,and1(1.4%)forvaricella(1.4%).

Table 2shows the analysis ofthe characteristics of the groupthatreceivedseasonalinfluenzavaccinecomparedto thegroupofpatientswho didnotreceivethisvaccine.The sameanalysiswasdoneforallvaccinesunderstudy.

No association among the use of any vaccine and dis-easeactivity,functionaldisability,physicalactivity,smoking, andyearsofschoolingwasnoted.Similarly,nodifferencein frequency ofcomorbid conditionsthat could influence the indicationoftheuse ofsomevaccines,suchascancerand diabetesmellitus,wasobserved.Nopatienthadchroniclung diseaseorischemicheartdisease.Theguidanceonwhich vac-cinepatientsshouldorshouldnotusedidnotresultinhigher or lower frequency of using any vaccine. Also in patients vaccinated against H1N1 influenza, therewas no observed differenceinrelationtodrugtherapyoruseofothervaccines. Withregardtoage,patientswhoreceivedhepatitisBand MMR vaccineswere younger (44±12 versus53±13,p=0.03 and 37±9.5 versus 52±13; p=0.01, respectively). The time todiagnosisofRAwaslongerinthegroupthatreceivedTd (6.8±2.7versus5.4±2.7,p=0.03)andinthosewhousedH1N1 influenzavaccine(6,7±2.6versus5±2.9,p=0.01).Thegroup thatreceivedantipneumococcalvaccinepresentedhigherrate ofpatientsabove60years(75%versus22%,p=0.04).

Patientsusingdoubleadult-typevaccinealsomademore frequentuseofMMR(20%versus0%,p<0.005),hepatitisB(47%

versus26%,p<0.001)andyellowfever(63%versus29%,p=0.01) vaccines,comparedtothegroupthathasnotbeenvaccinated withTd.

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Table2–Analysisofpatientsaccordingtoinfluenzavaccination.

Influenza vaccine (n=29)

Non-vaccinated (n=39)

p-value

Age 57.9+12.8 45.4+10.8 <0.001

>60years-old 15 2 <0.001

Timetodiagnosis 6.7+2.8 5.5+2.7 0.07

DAS28 3.6+1.7 3.6+1.6 0.8

HAQ 0.77+0.69 0.60+0.68 0.3

Vaccineguidance 2 3 1.0

Vaccines

Pneumococcal 4 0 0.029

MMR 3 3 0.6

YellowFever 15 15 0.4

Tetanus-diphteria(Td) 20 10 <0.001

H1N1 18 24 0.8

Meningococcal 1 0 0.4

Varicella 1 0 0.4

Prednisone 9 4 0.5

SyntheticDMARDs 28 39 0.4

Methotrexate 25 30 0.5

Leflunomide 7 10 0.8

Antimalarials 7 11 0.9

Sulfasalazine 4 4 0.7

BiologicalDMARDs 4 10 0.3

Infliximab 1 4 0.3

Adalimumab 1 1 1.0

Etanercept 1 0 1.0

Rituximab 2 2 1.0

Abatacept 0 2 0.5

Smoking

Current 5 1 0.07

Prior 8 11 0.8

Physicalactivity 11 21 0.2

Neoplasia 0 1 1.0

Diabetesmellitus 4 1 0.1

(0%versus32%,p=0.015).Patientsvaccinatedagainsthepatitis BalsousedmorefrequentlyMMR(33%versus19%,p=0.01).

Allpatientsvaccinatedwithliveattenuatedviruses(MMR, varicellaandyellowfever)wereonimmunosuppressive ther-apy. In all these cases, the vaccination occurred without guidancegivenbyRheumatologyDepartmentphysicians.

Discussion

DespitetheincreasedinfectioussusceptibilityofRApatients and the importance of vaccination, the practice of pas-siveimmunizationhasbeenperformedimproperlyinthese patients.10,14 OurstudyshowedthatBrasiliacohortpatients

received little guidance (7.3%) from the physician as to whetherornottousevaccinesingeneral,orspecificallyin relationtocontraindicationsoflivevirusvaccines.Thus,most ofvaccinatedpatientsinourearlyRAservicereceivedthe vac-cineontheirown,regardlessofmedicaladvice.Thisfinding isveryimportant,becausetheBrasiliacohortisfollowed-up atanoutpatient rheumatology tertiary careservice, where therecommendationsforvaccinationinimmunosuppressed patientsshouldbeobserved.

Thelackofrecommendationbyprofessionalsfroma ter-tiary care service makesus wonderabout the situation in relation to the recommendation tobe vaccinated in other primary and secondary care centers in our country, and emphasizestheimportanceofgreaterdisclosureand atten-tionforthatmatter.

Workdoneinothercountriesshowedhigherfrequencyof medicalguidanceastovaccination,withproportionsranging from 45% to 95%.22–25 We observed no influence of

guid-anceontheuseofanyvaccine.However,Doeetal.showed improvementintherateofinfluenzavaccinationafter guid-anceoptimizationfromhealthprofessionals,anincreaseof 56%to72%infouryearsofobservation.22,23

Besides medical guidance, other factors influence vac-cination coverage, for instance, vaccination offered at the hospital,allergytovaccinecomponents,andpreviousadverse reactions.22–27 The length of rheumatologists’ professional

practice may also interfere with the frequency of passive immunization. Desai et al. showed a higher proportion of patients vaccinated against pneumonia in the group of rheumatologists with ≤ 10 years of practice.28 However,

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influenceoftimeofprofessionalpractice.29Intheearly

arthri-tis outpatient service wherethis study was conducted, all rheumatologistshave≤10yearsofpractice.

Wefoundthattheuseofsomevaccines,suchasinfluenza, tetanus,andhepatitisB,was animportantfactor forusing othervaccines.Thismayhavehappenedthankstothebest advicegiventothesepatientsabouttheimportanceof vacci-nationingeneral.Furthermore,intheplaceofapplicationofa particularvaccine(asoccursinprimaryhealthservices)other vaccinesmayhavebeenprovided,inaccordancewithageand riskofacquiringotherinfections.

Regardingvaccinationagainstinfluenza,weshowedthat vaccinationcoverage (42%)was suboptimal,similar tothat reportedinotherstudiesforRA.14,22,23InBrazil,thesepatients

arethetargetoftheNationalCampaignforElderly Vaccina-tion,whichoccursannually.Thegoalofthecampaignisto vaccinate80%ofthetargetpopulationagainstinfluenza,and, in2011,ithasachieved84%vaccinationcoverage.30The

vac-cinationforpneumoniawasstilllessfrequent(5.8%),andall patientswerealsovaccinatedforinfluenza.Thesevaluesare lowerthanthosereportedintheliterature,rangingfrom20.2% to43%.25,28 Age over 60years wasa factor thatinfluenced

vaccinationagainst influenza and pneumonia,as alsowas observedinothercountries,24,28,31whichispossiblyexplained

bytheextensivemediacoverageoftheNationalCampaignfor ElderlyVaccination.

Thevaccine againstH1N1influenza was themostused byourpatients(61.7%),thankstoanationalcampaigndue tothepandemicin2009,whichincludedimmunosuppressed patients.Thisdemonstratesthatwhenpatientsarebetter tar-geted,thevaccinationcoverage canbemoreeffective.In a BrazilianstudyofRApatients,thevaccinewaswelltolerated andsafe,despitealowerseroconversion.32

Infectionsinpatients withRAhavegained greater con-cernwiththeemergenceoftheso-calledbiologicalagents, including inhibitors of tumor necrosis factor-alpha (anti-TNF␣), rituximab, tocilizumab, and abatacept. These drugs arecommonlyusedincombinationwithtraditionalDMARDs, further increasing the immunosuppressive effect of these drugs.10Theuseofrituximabmaycompromisetheresponse

ofsomeimmunizations,suchaspneumococcalandflu vac-cines,duetoitsmechanismofaction;thus,theadministration of these vaccines is recommended before beginning that medication.8,33

Feutchtenbegeretal. noted a higherrate ofvaccination againstinfluenzaandStreptococcuspneumoniaeinpatientswho wereonanti-TNForrituximab.25However,nodifferencewas

observedinrelationtomedicaladviceornotvaccinationin patientswhowere usingbiologicals. Inpatientsvaccinated againsthepatitisB,leflunomidewaslessused–anapparently fortuitousfinding.Wedidnotobserveanincreasedpresence ofliverdiseaseinthesepatients.

Patients vaccinated for viral hepatitisB and MMR were younger.ThisisbecausethetargetpopulationforMMR vac-cinearewomen20-49yearsandmen20-39years.Likewise,the nationalimmunizationschedulerecommendshepatitisB vac-cinationforadultsbelongingtoriskgroupssuchaspregnant women,healthprofessionals,workersofdifferentareas,and riskysexualgroups.Thispopulationisalsooftenquotedas beingyounger.21

Thelow frequencyofuse ofvaricellaand antimeningo-coccalvaccinesisjustifiedbythenon-routineofferofthese vaccinesbythepublichealthsysteminBrazil.Therewasno registryofuseofHPVvaccine,whichisalsocurrentlyoffered byprivatemedicalservices.

Vaccinationwithliveattenuatedcomponents(MMR, vari-cellaandyellowfever)wasveryfrequentandinadvertently made.Theuseofliveattenuatedvaccinesshouldbeavoided when possible, but these products may be generally used inmoderatelyimmunosuppressed patients,witheach case beingindividuallyevaluated.8

With respect to anti-yellow fever vaccine, Mota et al. observedinanotherstudyconductedinourdepartment 52 patients with RAwho had received this vaccine. Ofthese, 12.8% had only mild adverse effects. There were no seri-ous reactions or deaths.12 Considering thatyellow fever is

endemicinagreatpartofBrazil,thevaccinationagainstthis diseaseisindicatedfortheresidentpopulationinan exten-sivepartofthenationalterritory(inadditiontotravellersto theseregions).However,thecurrentrecommendationisthat patientsundergoingimmunosuppressivetherapyshouldnot bevaccinatedagainstthisdisease.13

Thestudyshowedthatahighpercentageofpatientsinour earlyRAcohort,livinginanendemicareaforyellowfever,are vaccinatedregardlessofmedicaladvice.

It is essential for rheumatologists from endemic areas beingabletoinstructthepatientsaboutareas with recom-mendationofthevaccine,epidemicsandoutbreaks,aswell asevaluating theindividual riskofinfection anddegreeof immunosuppressionforeachpatient.

Althoughthisisthefirststudyevaluatingthevaccination statusofpatientswithearlyRA,ithassomelimitations.The study didnotevaluatethe vaccinationcard ofall patients, becausethecardhadbeenlostbyafewindividuals.Inthese cases, the recordof thevaccines may nothave been done reliably, due tothe patients’ memory bias. Thereasons by whichsomepatientsmissedoutimmunizationwerealsonot evaluated–suchasallergiesandpreviousvaccinereactions, evenwhentheywerebriefedbythedoctor.Theknowledgeof thesereasons wouldhelp ustooptimizethe patients’ vac-cination coverage. Another limitation was that we didnot assessseroconversion,seroprotectionandadversereactions fromvaccines.

After this study,our service is trying to offer guidance ontheappropriateuseofvaccines,androutinelyassessthe immunizationstatusofpatientswithearlyRA.Thishasbeen doneinformofachecklist,especiallypriortotreatmentwith DMDs.Ideally, thisassessmentshouldbemadenotonlyby rheumatologists in secondary/tertiary care healthservices, butalsoattheprimarylevelofhealthcare,bynon-specialist doctorsandnurses.

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rheumatologist,buttothepatient’sspontaneousdemandfor thevaccine.

Thus,bothdoctorsandpatientsshouldbebetterinformed astothenecessityofvaccination,giventhatinfectionsarean importantcauseofmorbidityandmortalityinpatientswith RA.Inthisscenario,thedisseminationandimplementation oftherecommendations containedintheBrazilianSociety ofRheumatologyConsensus2012onVaccinationinPatients withRheumatoid Arthritismay be ofgreatimportance for improvingtheclinicalpracticeofrheumatologists.16

Conflicts

of

interest

Theauthorsdeclarenoconflictsofinterest.

Acknowledgement

Ourspecialthankstotheresidentcolleagueswhohelpedus indatacollection:MelianeCardosoandGabrielaJardim.

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Imagem

Table 1 – General characteristics of patients diagnosed with early RA evaluated for vaccination.
Table 2 – Analysis of patients according to influenza vaccination. Influenza vaccine (n = 29) Non-vaccinated(n=39) p-value Age 57.9 + 12.8 45.4 + 10.8 &lt;0.001 &gt;60 years-old 15 2 &lt;0.001 Time to diagnosis 6.7 + 2.8 5.5 + 2.7 0.07 DAS 28 3.6 + 1.7 3.6

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