Evaluation of the Usability of the Immunization Information System in Brazil: A Mixed-Method Study.

Introduction: Usability is a quality attribute that can evaluate the ease of use of user interfaces, based on standards called usability heuristics. Objective: To evaluate the usability components of the Brazilian Immunization Information System (IIS), focusing on the users and their interaction and agility with the interfaces. Materials and Methods: It was a concomitant and convergent mixed-method study that used a cross-sectional design for the quantitative approach and the indirect method of heuristic evaluation for the qualitative approach. Participants were 137 nursing professionals working in vaccination rooms, who completed a structured questionnaire on standards of usability quality, and 4 specialists in information technology, who used a semistructured form to carry out a software inspection. Descriptive and inferential statistics and the heuristic inspection were used for the analyses. Results: The evaluation resulted in 10 violated heuristics and identified 14 usability problems on the 68 screens of the IIS. The system presented simple usability problems (grade 2 severity), which can be repaired, with a low correction priority. The heuristics best evaluated were error prevention (3.03 ± 0.54) and help and documentation (3.00 ± 0.68); and the worst evaluated was visibility of system status, with a mean of 2.62 ± 0.55. Professionals with a technical education level presented a higher score on the scales for the recognition rather than recall heuristic when compared with the nurses (2.77 ± 0.49 vs. 3.67 ± 0.66, p = 0.003). Conclusion: The system provides easy access for users, however, has weaknesses in its ability to allow the users to easily achieve their goals of interaction with the interface.

Prevalence and underreporting of immunization errors in childhood vaccination: results of a household survey.

OBJECTIVE: To investigate underreporting of immunization errors based on vaccination records from children under five years of age. METHOD: An epidemiological, cross-sectional analytical study, carried out through a household survey with 453 children aged 6 months to 4 years in three municipalities in Minas Gerais in 2021. A descriptive analysis was carried out, and the prevalence of the error was calculated per 100 thousand doses applied between 2016 and 2021. The magnitude was estimated of the association between variables by prevalence and 95% Confidence Intervals (95%CI). To analyze underreporting, State reporting records were used. RESULTS: A prevalence of immunization errors was found to be 41.9/100,000 doses applied (95%CI:32.2 - 51.6). The highest prevalence occurred between 2020 (50.0/100,000 doses applied) and 2021 (78.6/100,000 doses applied). The most frequent error was an inadequate interval between vaccines (47.2%) associated with adsorbed diphtheria, tetanus and pertussis (DTP) vaccine (13.7/100,000) administration. Vaccination delay was related to immunization errors (7.55 95% CI:2.30 - 24.80), and the errors found were underreported. CONCLUSION: The high prevalence of underreported errors points to a worrying scenario, highlighting the importance of preventive measures.

Evaluation of Immunobiological Cold Chain Costs.

Background and Purpose: Studies assessing the costs of the immunobiological cold chain (CC) are scarce. Therefore, the factors that influence the allocation of resources in this process are not known. The objective of this study is to determine the cost of the immunobiological CC. Methods: The Health Economic Assessment study was carried out in Minas Gerais, Brazil, between 2021 and 2022. The unit of analysis was the municipal level of the CC. The perspective of the Public Health System (Sistema Único de Saúde) was considered as a funder, the year 2021 was considered as the time frame, and the period of 1 year was considered as the time horizon of the analysis. Direct medical, nonmedical, and indirect costs were included. A mixed technique was used involving micro- and macrocosting and sensitivity analysis to identify the influence of the main categories on the final cost. Results: The total cost was USD 20,014,545, with nonmedical direct costs being the most representative (61.24%). Human resources were the most influential items, representing 76.43% of the total cost. Conclusions: The most influential items should be those of greatest concern and planned by managers to make the CC more efficient.

Prevalence of errors causing events allegedly attributable to vaccination/immunization: systematic review and meta-analysis.

OBJECTIVE: To identify the prevalence of errors that caused events supposedly attributable to vaccination or immunization. METHOD: Systematic literature review with meta-analysis carried out on the Medline, Cochrane Library, Cinahl, Web of Science, Lilacs, Scopus; Embase; Open Grey; Google Scholar; and Grey Lit databases; with studies that presented the prevalence of immunization errors that caused events or that provided data that allowed this indicator to be calculated. RESULTS: We evaluated 11 articles published between 2010 and 2021, indicating a prevalence of 0.044 errors per 10,000 doses administered (n=762; CI95%: 0.026 - 0.075; I2 = 99%, p < 0.01). The prevalence was higher in children under 5 (0.334 / 10,000 doses; n=14). The predominant events were fever, local pain, edema and redness. CONCLUSION: A low prevalence of errors causing events was identified. However, events supposedly attributable to vaccination or immunization can contribute to vaccine hesitancy and, consequently, have an impact on vaccination coverage.

Evaluating the Adequate and Healthy Food Promotion Program in Primary Care: a mixed methods research. / Avaliação do Programa de Promoção da Alimentação Adequada e Saudável na Atenção Primária: pesquisa de métodos mistos.

This article aims to analyze the implementation of an Adequate and Healthy Food Promotion Program in Primary Health Care in the municipalities of Minas Gerais. Mixed Methods Research with Data Concomitant Embedded Strategy. Evaluative research from the perspective of the implementation analysis was employed in the quantitative approach. An exploratory-descriptive study was conducted using content analysis in the qualitative approach. Qualitative and quantitative data were incorporated for analysis from their imbrication. The Program Implementation Level (IL) was 92.5%, representing an adequate implementation. The methodology of the actions proposed in the program and the implementation of Continuing Education were convergent strengths that emerged from data imbrication. The need for more human resources for planning and implementing the program and the lack of a kitchen for cooking workshops were identified as challenges. The Program's implementation was adequate and can be extended to other Brazilian municipalities to help professionals structure interventions to promote adequate and healthy food in the Primary Care work routine.

O objetivo deste artigo é analisar a implantação do Programa de Promoção da Alimentação Adequada e Saudável na Atenção Primária à Saúde em municípios de Minas Gerais. Pesquisa de Métodos Mistos com Estratégia Incorporada Concomitante de dados. Na abordagem quantitativa utilizou-se pesquisa avaliativa na perspectiva da análise de implantação. Na abordagem qualitativa realizou-se estudo exploratório-descritivo utilizando a análise de conteúdo. Os dados qualitativos e quantitativos foram incorporados para análise a partir de sua imbricação. O Grau de Implantação do programa foi 92,5% representando uma implantação adequada. Na imbricação dos dados, a metodologia das ações propostas no programa e a realização da atividade de Educação Permanente foram pontos fortes convergentes que emergiram. Recursos Humanos insuficientes para planejamento e execução do programa e falta de cozinha para oficina culinária foram apontados como desafios. A implantação do programa foi adequada e poderá ser estendida para outros municípios brasileiros, de forma a apoiar os profissionais a estruturar intervenções de promoção da alimentação adequada e saudável na rotina de trabalho na Atenção Primária.

National Vitamin A Supplementation Program in primary care: what is the reality in Minas Gerais, Brazil? / Programa Nacional de Suplementação de Vitamina A na atenção primária: qual a realidade em Minas Gerais, Brasil?

The present study aimed to evaluate the National Vitamin A Supplementation Program in Minas Gerais, adopting the mixed sequential explanatory method. The quantitative approach adopted the multidimensional instrument per the components of vitamin A supplementation and food and nutrition education. We employed an analysis matrix with parameters to define the implementation as adequate, partially adequate, inadequate, and critical. We used semi-structured interviews in the qualitative approach. The "process" dimension was better evaluated than the "structure", with an implementation level (IL) of 84.6% and 78.5%, respectively. The Program's strengths include supplementation planning, achieving goals, recording information, supporting breastfeeding, and the performance of Community Health Workers. Weaknesses are fragmented work, analysis of information limits, access to the Program's actions, implementation of educational actions, and lack of or insufficient availability of nutritionists and training. The Program's reality only partially considered health promotion actions and focused on vitamin A supplementation. Implementing food and nutritional education actions is imperative to face vitamin A deficiency.

Objetivou-se avaliar o Programa Nacional de Suplementação de Vitamina A em Minas Gerais. Utilizou-se método misto sequencial explanatório. Na abordagem quantitativa, utilizou-se instrumento multidimensional segundo componentes de suplementação da vitamina A e educação alimentar e nutricional. Usou-se uma matriz de análise com parâmetros para definir a implantação como adequada, parcialmente adequada, não adequada e crítica. Na abordagem qualitativa, foram utilizadas entrevistas semiestruturadas. A dimensão processo foi melhor avaliada que a estrutura, apresentando grau de implantação de 84,6% e 78,5%, respectivamente. As fortalezas do programa incluem: planejamento da suplementação, alcance de metas, registro de informações, apoio ao aleitamento materno e atuação dos agentes comunitários de saúde. Entre as fragilidades estão: fragmentação do trabalho, limites na análise das informações, acesso às ações do programa, implantação de ações educativas, ausência ou insuficiência de nutricionistas e capacitações. A realidade do programa não contemplou, em sua totalidade, ações de promoção da saúde, sendo o foco a suplementação da vitamina A. É imperativo implementar ações de educação alimentar e nutricional para o enfrentamento da deficiência de vitamina A.

Spatial behavior of hepatitis A, MMR, and varicella vaccination coverage in the state of Minas Gerais, 2020.

OBJECTIVE: To analyze the spatial behavior of hepatitis A, measles, mumps, and rubella (MMR), and varicella vaccination coverage in children and its relationship with socioeconomic determinants in the state of Minas Gerais. METHODS: This ecological study investigated records of doses administered to children, extracted from the Immunization Information System of 853 municipalities in Minas Gerais, in 2020. We analyzed the vaccination coverage and socioeconomic factors. Spatial scan statistics were used to identify spatial clusters and measure the relative risk based on the vaccination coverage indicator and the Bivariate Moran Index, and thus detect socioeconomic factors correlated with the spatial distribution of vaccination. We used the cartographic base of the state and its municipalities and the ArcGIS and SPSS software programs. RESULTS: Hepatitis A (89.0%), MMR (75.7%), and varicella (89.0%) showed low vaccination coverage. All vaccines analyzed had significant clusters. The clusters most likely to vaccinate their population were mainly located in the Central, Midwest, South Central, and Northwest regions, while the least likely were in the North, Northeast, and Triângulo do Sul regions. The municipal human development index, urbanization rate, and gross domestic product were spatially dependent on vaccination coverage. CONCLUSIONS: The spatial behavior of hepatitis A, MMR, and varicella vaccination coverage is heterogeneous and associated with socioeconomic factors. We emphasize that vaccination records require attention and should be continuously monitored to improve the quality of information used in services and research.

Vaccination coverage in children under one year of age and associated socioeconomic factors: maps of spatial heterogeneity.

OBJECTIVE: to analyze vaccination coverage spatial distribution in children under one year old and the socioeconomic factors associated with meeting the recommended goals in Minas Gerais. METHODS: an ecological study, carried out in 853 municipalities in the state. Pentavalent, poliomyelitis, meningococcal conjugate, yellow fever, rotavirus, and 10-valent pneumococcal conjugate vaccination coverage were analyzed. Scan statistics and multiple logistic regression were performed to identify spatial clusters and factors associated with meeting coverage goals. RESULTS: spatial analysis revealed clusters with risk of low coverage for all vaccines. Number of families with per capita income of up to 1/2 wage, Minas Gerais Social Responsibility Index and percentage of the poor or extremely poor population were associated with meeting the established goals. CONCLUSIONS: the results are useful for designing interventions regarding the structuring of vaccination services and the implementation of actions to increase vaccination coverage in clusters with less propensity to vaccinate.

Construction and validity of an educational video to prevent immunization errors.

OBJECTIVE: to construct and validate an orientation video, based on a low-fidelity clinical simulation scenario, to prevent immunization errors. METHODS: a methodological study with video construction, validated in two stages by different audiences. Content was selected based on a realistic simulation scenario of the vaccine administration process to a patient-actor. Items with concordance greater than 0.8 and 0.6 were considered valid, verified using the Content Validity Index (CVI) and the Content Validity Ratio (CVR), respectively. RESULTS: judges' CVI had an average of 97.5%, and CVR, 0.9, and health professionals' CVI, 95.4%, and CVR, 0.8. Successes in administering vaccines were addressed, such as careful reading of labels, double-checking the vaccine, distractions/interruptions and error reporting. CONCLUSIONS: the video was constructed and validated in terms of content, and can be used in training professionals working in vaccination.

The COVID-19 pandemic and vaccination abandonment in children: spatial heterogeneity maps.

OBJECTIVE: to identify spatial clusters corresponding to abandonment of routine vaccines in children. METHOD: an ecological study, according to data from the 853 municipalities of a Brazilian state. The records analyzed were those of the multidose pentavalent, pneumococcal 10-valent, inactivated poliomyelitis and oral human rotavirus vaccines of 781,489 children aged less than one year old. The spatial scan statistics was used to identify spatial clusters and assess the relative risk based on the vaccination abandonment indicator. RESULTS: the spatial scan statistics detected the presence of statistically significant clusters for abandonment regarding the four vaccines in all the years analyzed. However, the highest number of clusters with high relative risk estimates was identified in 2020. The Vale do Aço and West, North and West, and Southwest regions stand out for the pentavalent, poliomyelitis and rotavirus vaccines, respectively. CONCLUSION: in an attempt to mitigate the devastating impact of the COVID-19 pandemic, the immunization program experienced setbacks. The presence of clusters points to the need to implement integrated strategies that may involve different sectors for an active search for children and prevent outbreaks of vaccine-preventable diseases in the near future.

Regionalization of psychosocial care: a panoramic view of the Psychosocial Care Network of Minas Gerais state, Brazil. / Regionalização da atenção psicossocial: uma visão panorâmica da Rede de Atenção Psicossocial de Minas Gerais, Brasil.

The present study aims at analyzing the regionalization of the services carried out by the Psychosocial Care Network (RAPS in Portuguese) in the state of Minas Gerais (MG) in Brazil, yielding indicators that may enhance the SUS strategic management towards the strengthening of the psychosocial care provided by the state. It is a cross-sectional study, based on the data collected in May 2019 from government websites, considering the state's Macro-Regions and Health Regions as units of analysis. Indicators of service coverage in relation to the population in accordance to normative parameters determined by the Ministry of Health for a better understanding of the effective coverage were produced, and a general indicator (iRAPS) of the supply of services in this network in Minas Gerais state was validated. The outcomes allow a detailed analysis of the structural aspect of the RAPS in MG and unveil the development of a robust network. However, important regional heterogeneities were noticed and also a lack of services aiming at specific populations providing assistance 24 hours a day, which weakens the proper access to RAPS in several parts of the state. Higher values of iRAPS were found in health regions with low socioeconomic development and low general offer of health services, a fact that differs from the national scenario, which may imply state policy investments aiming at offering RAPS within the state hinterland areas.

Objetivou-se analisar a regionalização dos serviços da Rede de Atenção Psicossocial (RAPS) em Minas Gerais (MG), Brasil, gerando indicadores que possam potencializar a gestão estratégica do SUS no fortalecimento da atenção psicossocial do estado. É um estudo transversal, realizado a partir de dados coletados em maio de 2019 em sites governamentais, tendo as Macrorregiões e Regiões de Saúde do estado como unidades de análise. Foram produzidos indicadores da cobertura de serviços em relação à população, de acordo com parâmetros normativos estipulados pelo Ministério da Saúde, para melhor compreensão da cobertura efetivada e validou-se um indicador geral (iRAPS) da oferta dos serviços dessa rede em MG. Os resultados encontrados possibilitam uma análise detalhada do aspecto estrutural da RAPS em MG e demonstram a implantação de uma rede robusta. Entretanto, percebem-se importantes heterogeneidades regionais e também uma carência de serviços voltados para populações específicas e com funcionamento 24 horas, o que fragiliza o adequado acesso à RAPS em diversos territórios do estado. Foram encontrados maiores valores do iRAPS nas regiões de saúde com baixo desenvolvimento socioeconômico e baixa oferta geral de serviços de saúde, fato que difere do cenário nacional.

Childhood vaccination coverage of hepatitis A, measles, mumps and rubella, and varicella: temporal trend analysis in Minas Gerais, Brazil. / Cobertura vacinal infantil de hepatite A, tríplice viral e varicela: análise de tendência temporal em Minas Gerais, Brasil.

OBJECTIVE: To analyze the temporal trend of vaccination coverage for hepatitis A, measles, mumps and rubella, and varicella in a Brazilian state from 2014 to 2020. METHODS: An ecological, time-series study that considered data from 853 municipalities in the state of Minas Gerais that compose the 14 regions of the state, these being the territorial units of analysis. Records of applied doses of hepatitis A, measles, mumps and rubella, and varicella vaccines registered in the Brazilian Immunization Information System were analyzed. Trends were estimated by Prais-Winsten regression and 95% confidence intervals of measures of variation were calculated. RESULTS: Low vaccine coverage of hepatitis A, measles, mumps and rubella, and varicella was identified. Coverages above 95% were observed only in 2015 for the vaccine against hepatitis A (98.8%) and, in 2016, for varicella (98.4%). The measles, mumps and rubella vaccine showed coverage of less than 95% in all analyzed years. Decreases of 13.6 and 4.3% between the years 2019 and 2020 were identified for the measles, mumps and rubella, and hepatitis A vaccines, respectively. There was a decreasing trend in hepatitis A vaccination coverage in the South (p=0.041), East (p=0.030), and North (p=0.045) regions; and for the measles, mumps and rubella in Jequitinhonha Valley (p=0.002), East (p=0.004), and North (p=0.024) regions. Increasing coverage was observed only for varicella in eight regions of the state. CONCLUSIONS: The data point to heterogeneity in the temporal behavior of vaccination coverage in Minas Gerais. The downward trend in some regions causes concern about the possibility of resurgence of diseases, such as measles, which until then had been controlled.

OBJETIVO: Analisar a tendência temporal da cobertura vacinal de hepatite A, tríplice viral e varicela em um estado brasileiro no período de 2014 a 2020. MÉTODOS: Estudo ecológico de séries temporais, que considerou dados dos 853 municípios de Minas Gerais que compõem as 14 regiões do estado, sendo estas as unidades territoriais de análise. Foram analisados registros de doses aplicadas das vacinas hepatite A, tríplice viral e varicela registrados no Sistema de Informação de Imunização do Brasil. As tendências foram estimadas pela regressão de Prais-Winsten e calculados os intervalos de confiança 95% das medidas de variação. RESULTADOS: Identificaram-se baixas coberturas vacinais de hepatite A, tríplice viral e varicela. Coberturas acima de 95% foram observadas somente no ano de 2015 para a vacina contra hepatite A (98,8%) e, em 2016, para a varicela (98,4%). A vacina tríplice viral apresentou cobertura inferior a 95% em todos os anos analisados. Uma queda de 13,6 e 4,3% entre os anos de 2019 e 2020 foi identificada para as vacinas tríplice viral e hepatite A, respectivamente. Observou-se tendência decrescente na cobertura vacinal da hepatite A nas regiões Sul (p=0,041), Leste (p=0,030) e Norte (p=0,045); para a tríplice viral, nas regiões Jequitinhonha (p=0,002), Leste (p=0,004) e Norte (p=0,024). A cobertura crescente foi observada somente para a varicela em oito regiões do estado. CONCLUSÕES: Os dados apontam heterogeneidade no comportamento temporal das coberturas vacinais em Minas Gerais. A tendência decrescente em algumas regiões desperta preocupação pela possibilidade do recrudescimento de doenças, como o sarampo, até então controladas.

Incidence of immunization errors in the state of Minas Gerais, Brazil: a cross-sectional study, 2015-2019. / Incidência de erros de imunização em Minas Gerais: estudo transversal, 2015-2019.

OBJECTIVE: To evaluate the incidence of immunization errors in the public health service of the state of Minas Gerais, Brazil. METHODS: This was a cross-sectional study, based on errors reported on the National Immunization Program Information System between 2015 and 2019. A descriptive analysis and calculation of the incidence for the state's health macro-regions were performed. RESULTS: A total of 3,829 notifications were analyzed. Children younger than 1 year old were the most affected (39.1%) and the intramuscular route accounted for 29.4% of the errors. The most frequently reported error was administration of vaccines outside minimum and maximum recommended ages (37.7%). There was a higher incidence of errors in Vale do Aço (26.5/100,000) and Triângulo do Norte (22.6/100,000) macro-regions. CONCLUSION: Immunization errors showed a heterogeneous incidence among the macro-regions of the state of Minas Gerais, between 2015-2019, and the administration of vaccines outside minimum and maximum recommended ages was the most frequently reported error.

The influence of nursing team's behavior in adverse event following immunization surveillance.

OBJECTIVES: to analyze the effects of nursing professionals' behavior in adverse event following immunization surveillance. METHODS: a cross-sectional study of 384 participants who received vaccines. Information on vaccination history, administered vaccines and vaccination guidelines were analyzed. Descriptive and bivariate analyzes were performed using simple logistic regression (unadjusted Odds Ratio). RESULTS: guidelines on events (PR=1.8; p=0.001) and conducts regarding their occurrence (PR=1.7; p=0.001) are activities that influence adverse event following immunization surveillance. More than half of participants did not receive guidance on the vaccines administered, the events and the conduct in case of an occurrence. Only 38.5% were instructed about the vaccines administered and 40.6% about adverse events. In the presence of an event, 29.9% reported that they sought services for notification. CONCLUSIONS: proper screening, providing guidance on vaccines and adverse events are essential preventive measures to strengthen adverse event following immunization surveillance.

Adequacy assessment of immunobiological agent conservation in the Western Health macro-region of Minas Gerais State, Brazil: a descriptive study, 2017. / Avaliação da adequação da conservação de imunobiológicos na macrorregião de saúde Oeste de Minas Gerais: estudo descritivo, 2017.

OBJECTIVE: To describe the adequacy of immunobiological agent conservation in vaccination rooms in the municipalities of the Western health macro-region of the state of Minas Gerais, Brazil. METHODS: This was a descriptive study, based on a validated scale, with a maximum score of 15 points. A descriptive analysis and an association test between the scores obtained by the municipalities and variables of the external context were performed. RESULTS: 275 out of a total of 295 existing vaccination rooms were evaluated. Immunobiological agent conservation in the West macro-region obtained an average score of 4 points (standard score, 0 to 15). There was a poor availability of immunization supplies aimed at immunobiological agent conservation, and work processes, that require improvement. Small municipalities presented better immunobiological agent conservation (p=0.011). CONCLUSION: Immunobiological agent conservation in vaccination rooms in the Western health macro-region of Minas Gerais State was considered inadequate.

Computerization of primary health care: the manager as a change agent.

OBJECTIVE: To analyze factors associated with the implementation of software systems of the e-SUS Primary Care strategy in municipalities of Minas Gerais. METHODS: This is a cross-sectional study conducted with municipal managers of the e-SUS Primary Care strategy. A sample of cities stratified according to population size was selected. Descriptive, bivariate, and multivariate analyzes were performed to identify factors associated with the implementation of the systems. RESULTS: In 49.1% (95%CI: 39.5-58.8) of the municipalities investigated, some of the e-SUS Primary Care systems were implemented. Time working as a strategy manager (OR: 3.03) and training for Primary Care professionals in the municipality (OR: 2.28) were associated with the implementation of the systems. CONCLUSION: The presence of a trained manager leading the implementation process impacted the implementation of the e-SUS AB strategy software systems in the municipalities of Minas Gerais. It is also essential to highlight the need to improve the technological infrastructure for the computerization of Primary Care.

Structural and procedural conditions in National Immunization Program Information System establishment.

OBJECTIVES: to analyze structural and process conditions in National Immunization Program Information System establishment. METHODS: a cross-sectional study conducted in 307 vaccination rooms in the state of Minas Gerais in 2017. For data collection, a multidimensional questionnaire was used. Descriptive data analysis was performed. RESULTS: vaccination rooms have basic inputs necessary for System establishment. The greatest problems relate to professional practice. Low enrollment of population, failures in the active search for absentees, vaccine scheduling and absence of reports to monitor vaccination coverage were identified. Training was considered insufficient and ineffective. CONCLUSIONS: Immunization Information System is an essential technological innovation for the management of immunization actions. However, the production of timely records and the use of information are still challenges. Investments in training are required to ensure System's management and operationalization activities.

Acceptance and use of the Information System of the National Immunization Program.

OBJECTIVE: to analyze the acceptance and use of the Information System of the National Immunization Program in primary health care vaccination rooms. METHOD: a unique case study of a qualitative approach in the light of the Unified Theory of Acceptance and Use of Technology. Data collection included an interview with 18 professionals responsible for the implementation of the information system, observation of vaccination rooms in 12 municipalities of the West Macro-region of Minas Gerais, selected from a preliminary study. Data was systematized and analyzed through Content Analysis. RESULTS: the interviewees are satisfied with the usefulness and ease of the system usage, but do not have the same satisfaction with the organizational infrastructure due to the lack of computers and low Internet connectivity in the health units, as well as with the incipient training for the use of the information system and the lack of skills with the technology among the human resources. CONCLUSION: nursing professionals perceive advantages in the acceptance and use of the Information System of the National Immunization Program. It was clear that the vaccinated individual's history control and the decrease of records in paper are evidenced as facilitators of this acceptance. The system was considered reliable and secure.

Computerization of primary health care in Brazil: the network of actors.

OBJECTIVE: To analyze the network of human and non-human actors involved in the computerization of primary health care in the Brazilian federal government. METHOD: A qualitative study that used as a theoretical reference the actor-network theory and as a methodological reference the cartography of controversies. Data analysis was carried out using Gephi software, and through the extraction of reports, informed by the actor-network theory. RESULTS: We found a network of 288 connections among 33 actors, composed mainly of nonhuman influencers of computerization. These actors are distributed throughout 3 inter-related communities, and manage the network by defining obligations, penalties, conflicts and intentionalities, thus influencing the success of the intended computerization. FINAL CONSIDERATIONS: The network of actors at the federal level generates situations that, in many cases, hamper the successful implementation of a nationwide computerization strategy.

Prevalence of errors causing events allegedly attributable to vaccination/immunization: systematic review and meta-analysis / Prevalencia de errores causantes de acontecimientos supuestamente atribuibles a la vacunación/inmunización: revisión sistemática y metanálisis / Prevalência de erros que causaram eventos supostamente atribuíveis à vacinação/imunização: revisão sistemática e metanálise

ABSTRACT Objective: To identify the prevalence of errors that caused events supposedly attributable to vaccination or immunization. Method: Systematic literature review with meta-analysis carried out on the Medline, Cochrane Library, Cinahl, Web of Science, Lilacs, Scopus; Embase; Open Grey; Google Scholar; and Grey Lit databases; with studies that presented the prevalence of immunization errors that caused events or that provided data that allowed this indicator to be calculated. Results: We evaluated 11 articles published between 2010 and 2021, indicating a prevalence of 0.044 errors per 10,000 doses administered (n=762; CI95%: 0.026 - 0.075; I2 = 99%, p < 0.01). The prevalence was higher in children under 5 (0.334 / 10,000 doses; n=14). The predominant events were fever, local pain, edema and redness. Conclusion: A low prevalence of errors causing events was identified. However, events supposedly attributable to vaccination or immunization can contribute to vaccine hesitancy and, consequently, have an impact on vaccination coverage.

RESUMEN Objetivo: Identificar la prevalencia de errores que causaron eventos supuestamente atribuibles a la vacunación o inmunización. Método: Revisión sistemática de la literatura con metaanálisis realizada en las bases de datos Medline, Cochrane Library, Cinahl, Web of Science, Lilacs, Scopus; Embase; Open Grey; Google Scholar; y Grey Lit; con estudios que presentaran la prevalencia de errores de inmunización que causaron eventos o que aportaran datos que permitieran calcular este indicador. Resultados: Se evaluaron 11 artículos publicados entre 2010 y 2021, indicando una prevalencia de 0,044 errores por cada 10.000 dosis administradas (n=762; IC95%: 0,026 - 0,075; I2 = 99%, p < 0,01). La prevalencia fue mayor en niños menores de 5 años (0,334 / 10.000 dosis; n=14). Los eventos predominantes fueron fiebre, dolor local, edema y enrojecimiento. Conclusión: Se identificó una baja prevalencia de eventos causantes de errores. Sin embargo, los eventos supuestamente atribuibles a la vacunación o inmunización pueden contribuir a la indecisión sobre la vacunación y, en consecuencia, repercutir en la cobertura vacunal.

RESUMO Objetivo: Identificar a prevalência de erros que causaram eventos supostamente atribuíveis à vacinação ou imunização. Método: Revisão sistemática da literatura com metanálise realizada nas bases Medline, Cochrane Library, Cinahl, Web of Science, Lilacs, Scopus; Embase; Open Grey; Google Scholar; e Grey Lit; com estudos que apresentassem prevalência de erros de imunização que causaram eventos ou que disponibilizassem dados que permitissem o cálculo deste indicador. Resultados: Avaliou-se 11 artigos publicados entre 2010 e 2021, apontando prevalência de 0,044 erros por 10.000 doses administradas (n=762; IC95%: 0,026 - 0,075; I2= 99%, p < 0,01). A prevalência foi maior em crianças menores de 5 anos (0,334 / 10.000 doses; n=14). Quanto aos eventos, predominou-se: febre, dor local, edema, rubor. Conclusão: Identificou-se uma prevalência baixa de erros que causaram eventos. Entretanto, os eventos supostamente atribuíveis à vacinação ou imunização podem contribuir para a hesitação vacinal e, consequentemente, impactar nas coberturas vacinais.