[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100641316":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":25,"centralContacts":34,"locations":43,"responsibleParty":70,"collaborators":74,"id":78,"slug":79,"hasResults":80,"nctId":81,"briefTitle":82,"officialTitle":83,"acronym":18,"eligibilityCriteria":84,"healthyVolunteers":85,"sex":86,"minAge":87,"maxAge":88,"enrollmentInfo":89,"targetDuration":18,"studyType":92,"phases":93,"briefSummary":95,"conditions":96,"keywords":104,"overallStatus":123,"whyStopped":18,"lastUpdateSubmitDate":124,"lastUpdatePostDateStruct":125,"startDateStruct":128,"completionDateStruct":130,"leadSponsor":132,"locationsCount":133},{"fullName":5,"class":6},"Pontificia Universidad Catolica de Chile","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Text message reminder group","EXPERIMENTAL","Participants assigned to this arm will receive a WhatsApp text message reminder on day 0 of the intervention, sent by the Ministry of Health of Chile through the official National Immunization Program contactability platform (EMILIA, Rayén Salud). The message will include an acknowledgment that the participant is eligible for free pneumococcal vaccination upon turning 65 years of age, confirmation that the vaccine is available at no cost, and the name, address, and operating hours of vaccination centers in the participant's municipality of residence. A second reminder message will be sent on day 14 to participants who have not yet been vaccinated. Participants will be followed for 6 weeks, with vaccination status assessed at days 7, 21, and 42 from the start of the intervention.",[13],"Behavioral: WhatsApp text message reminder for pneumococcal vaccination",{"label":15,"type":16,"description":17,"interventionNames":18},"Usual care group","NO_INTERVENTION","Participants assigned to this arm will not receive a text message reminder. They will be informed of the pneumococcal vaccination recommendation through the usual communication channels of the National Immunization Program, including written press, digital media, and official social media accounts of the Ministry of Health of Chile. Vaccination status will be assessed at days 7, 21, and 42 from the start of the intervention, using the National Immunization Registry (RNI) as the data source.",null,[20],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":18},"BEHAVIORAL","WhatsApp text message reminder for pneumococcal vaccination","A text message reminder sent via WhatsApp on day 0 of the intervention by the Ministry of Health of Chile, through the official National Immunization Program contactability platform EMILIA (Rayén Salud). The message includes: (1) an official presentation identifying the Ministry of Health of Chile as the sender; (2) a reminder that the recipient is eligible for free pneumococcal vaccination upon turning 65 years of age; (3) confirmation that the 23-valent pneumococcal polysaccharide vaccine (PPV23) is guaranteed and available at no cost through the National Immunization Program; and (4) the name, address, and operating hours of vaccination centers in the participant's municipality of residence. A second reminder message with identical content will be sent on day 14 to participants in the intervention arm who have not yet received the vaccine. The message was developed by the National Immunization Program and the Ministry of Health Communications Unit, based on the Yale-UNICEF Vaccine M",[9],[26,30],{"name":27,"affiliation":28,"role":29},"Pablo Valenzuela García, MD, MSc","Pontifical Catholic University of Chile. National Immunization Program, Ministry of Health, Chile.","PRINCIPAL_INVESTIGATOR",{"name":31,"affiliation":32,"role":33},"Ignacio Castro Aguirre, MD; MPH","National Immunization Program, Ministry of Health, Chile.","STUDY_DIRECTOR",[35,39],{"name":27,"role":36,"phone":37,"phoneExt":18,"email":38},"CONTACT","56 223543508","povalenzuela@uc.cl",{"name":40,"role":36,"phone":41,"phoneExt":18,"email":42},"Ignacio Castro Aguirre, MD, MPH","56 225740355","ignacio.castro@minsal.cl",[44],{"facility":32,"status":18,"city":45,"state":46,"zip":47,"country":48,"countryCode":49,"cosmosGeoPoint":50,"geoPoint":55,"contacts":56},"Santiago","RM","8320064","Chile","CL",{"type":51,"coordinates":52},"Point",[53,54],-70.64827,-33.45694,{"lat":54,"lon":53},[57,59,61,64,66,68],{"name":40,"role":36,"phone":18,"phoneExt":58,"email":42},"56225740355",{"name":27,"role":36,"phone":18,"phoneExt":60,"email":38},"56223543508",{"name":62,"role":63,"phone":18,"phoneExt":18,"email":18},"Patricia Cabezas Olivares, Associate Degree in Nursing","SUB_INVESTIGATOR",{"name":65,"role":63,"phone":18,"phoneExt":18,"email":18},"Paulina Muñoz Cortés, Associate Degree in Nursing",{"name":67,"role":63,"phone":18,"phoneExt":18,"email":18},"Iván Brstilo Cerda, Bachelor of Science",{"name":69,"role":63,"phone":18,"phoneExt":18,"email":18},"Felipe Muñoz Pérez, Bachelor of Science",{"type":71,"investigatorFullName":72,"investigatorTitle":73,"investigatorAffiliation":5,"oldNameTitle":18,"oldOrganization":18},"SPONSOR_INVESTIGATOR","Pablo Tomás Valenzuela García","Specialist in Adult Infectious Diseases and Epidemiologist, UC. Advisor to the National Immunization Program, Ministry of Health, Chile.",[75],{"name":76,"class":77},"Ministry of Health, Chile","OTHER_GOV","100641316","randomized-controlled-trial-of-text-message-to-increase-pneumococcal-vaccination-in-adults-in-chile-100641316",false,"NCT07659470","RANDOMIZED CONTROLLED TRIAL OF TEXT MESSAGE TO INCREASE PNEUMOCOCCAL VACCINATION IN ADULTS IN CHILE.","RANDOMIZED CONTROLLED TRIAL OF THE USE OF TEXT MESSAGE REMINDERS TO INCREASE PNEUMOCOCCAL VACCINATION COVERAGE IN ADULTS AGED 65 YEARS IN CHILE.","Inclusion Criteria:\n\n* Adults born during the year 1961, turning 65 years of age in 2026\n* Resident in Chile at the time of the study\n* Valid mobile phone number registered in the National Immunization Registry (RNI)\n\nExclusion Criteria:\n\n* Record of pneumococcal vaccination in the National Immunization Registry (RNI).\n* Identified as deceased in the Chilean Civil Registry and Identification Service.",true,"ALL","64 Years","65 Years",{"count":90,"type":91},43000,"ESTIMATED","INTERVENTIONAL",[94],"NA","The goal of this randomized controlled trial is to learn if text message reminders sent through WhatsApp increase pneumococcal vaccination coverage in adults turning 65 years old in Chile. The main questions it aims to answer are:\n\nDo text message reminders increase the proportion of adults aged 65 years who receive the pneumococcal vaccine compared to usual care? Do text message reminders increase pneumococcal vaccination coverage within the first 7 days after the message is sent? Is there an association between socioeconomic factors and pneumococcal vaccination coverage in adults aged 65 years in Chile?\n\nResearchers will compare adults who receive a text message reminder to adults who receive no reminder (usual care) to see if the reminders increase vaccination uptake.\n\nParticipants will:\n\nBe randomly assigned to receive a WhatsApp text message reminder about the pneumococcal vaccine or to receive no reminder Receive a second reminder on day 14 if they have not yet been vaccinated (intervention group only) Be followed for 6 weeks, with vaccination status checked at days 7, 21, and 42 from the start of the intervention",[97,98,99,100,101,102,103],"Pneumococcal Infections","Immunization Programs","Vaccination Coverage","Text Messaging (Intervention)","Reminder Systems","Health Promotion","Aged 65 Years or Older",[105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,48],"Pneumococcal vaccine","Vaccination coverage","Text message reminder","WhatsApp","Older adults","National Immunization Program","Randomized controlled trial","Health behavior nudge","Digital health intervention","Public health","Streptococcus pneumoniae","Behavioral intervention","Vaccine uptake","Low-cost intervention","Population-based intervention","Pneumococcal polysaccharide vaccine","Immunization registry","Latin America","NOT_YET_RECRUITING","2026-06-15",{"date":126,"type":127},"2026-06-22","ACTUAL",{"date":129,"type":91},"2026-07-15",{"date":131,"type":91},"2026-10-01",{"name":72,"class":6},1]