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1.
Hum Vaccin Immunother ; 20(1): 2328406, 2024 Dec 31.
Artigo em Inglês | MEDLINE | ID: mdl-38573783

RESUMO

During the 2022-2023 season, the Region of Murcia (an autonomous community of Spain) introduced the influenza vaccination campaign in children aged 24-59 months with the live-attenuated influenza nasal spray vaccine. To expand coverage, a pilot study was conducted to include the 3- to 4-year population in 24 public schools. The aim of the study was to assess the experiences of parents and teachers involved in the project. This was a psychosocial qualitative study in which information was collected from a cohort of 23 parents and 17 teachers who attended three and two focus group sessions, respectively. A high degree of satisfaction with the school-located influenza vaccination program was consistently reported. The teachers reported creating a friendly environment and acting as companions to support children in the absence of their parents. They also considered the intranasal route, which avoids intramuscular puncture, as a facilitating element that turned the vaccination process into a kind of game. Parents emphasized the importance of vaccination to protect their children, and secondarily, to ensure protection of the family nucleus. Some parents who had their children already vaccinated in the health care center reported preference for the school setting, probably selecting this option in the future. The availability of school-based influenza vaccination promoted greater equity in accessing the vaccine and facilitated family reconciliation. To optimize coverage and minimize potential reluctance, providing the necessary information to parents both before and after vaccination was considered. School-located influenza vaccination was feasible and is a valuable strategy to be implemented in future campaigns.


Assuntos
Vacinas contra Influenza , Influenza Humana , Criança , Humanos , Influenza Humana/prevenção & controle , Projetos Piloto , Espanha , Vacinação , Pais/psicologia , Vacinas Atenuadas
2.
Euro Surveill ; 29(6)2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38333937

RESUMO

The monoclonal antibody nirsevimab was at least 70% effective in preventing hospitalisations in infants with lower respiratory tract infections (LRTI) positive for respiratory syncytial virus (RSV) in Spain (Oct 2023-Jan 2024), where a universal immunisation programme began late September (coverage range: 79-99%). High protection was confirmed by two methodological designs (screening and test-negative) in a multicentre active surveillance in nine hospitals in three regions. No protection against RSV-negative LRTI-hospitalisations was shown. These interim results could guide public-health decision-making.


Assuntos
Anticorpos Monoclonais Humanizados , Infecções por Vírus Respiratório Sincicial , Vírus Sincicial Respiratório Humano , Infecções Respiratórias , Lactente , Humanos , Espanha/epidemiologia , Antivirais/uso terapêutico , Infecções por Vírus Respiratório Sincicial/tratamento farmacológico , Infecções por Vírus Respiratório Sincicial/prevenção & controle , Infecções por Vírus Respiratório Sincicial/epidemiologia , Hospitalização , Infecções Respiratórias/tratamento farmacológico , Infecções Respiratórias/prevenção & controle , Infecções Respiratórias/epidemiologia , Hospitais
3.
Vaccines (Basel) ; 12(2)2024 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-38400175

RESUMO

The high burden of influenza in children has driven numerous countries towards universal vaccination of healthy children from 6 to 59 months of age. The Region of Murcia was one of the pioneer Spanish regions to conduct a universal vaccination campaign and to use live-attenuated intranasal vaccine (LAIV) if age appropriate. This study aims to evaluate the parents' likeliness to vaccinate their children and to compare the profile of vaccinating/non-vaccinating parents. This study was designed as a prospective, real-world, survey-based data collection in the 2022-2023 season campaign. This study's sample was selected from those children whose information was available in the local Public Health System databases PERSAN and VACUSAN. Children received LAIV or intramuscular vaccine (IIV) depending on their age as per standard practice. The parent self-vaccination/intention to vaccinate themselves in this campaign (OR = 4.75), the compliance with the official vaccination schedule (OR = 3.41), and the prescription of antibiotics more than twice in the previous year (OR = 2.24) were strongly associated with children's vaccination. Overall, vaccinating parents were very satisfied with the vaccine (IIV: 67.5% vs. LAIV: 68.8%, p = 0.320), and most parents would rather have their children vaccinated with LAIV for the next campaign (43.0%). The main reasons for vaccinating were to protect the child (LAIV: 85.9% vs. IIV: 89.4%), and the predominant reasons for not vaccinating were a lack of healthcare professional recommendation (30.9%), and lack of information about the vaccination campaign (21.5%) and the vaccine itself (21.0%). The clinical context of parents and children was determinant in decision making, which was also influenced by the presence or absence of recommendation by healthcare professionals. Parents were generally very satisfied with the vaccine and showed their preference towards LAIV for future campaigns.

4.
Vaccine X ; 16: 100426, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38205135

RESUMO

In 2019, ACWY meningococcal vaccination for people born between 2001 and 2007 was recommended. In Murcia, during the first 9 months, the coverage was 52.89%. This study is aimed to evaluate the effects of e-mail reminders on vaccination coverage. A longitudinal, prospective trial was performed on non-vaccinated individuals with e-mail addresses. An e-mail reminder was sent to people assigned to the intervention group (born in any month, except January and July), and 4 weeks later, the same was sent to the control group. Vaccination coverage was assessed before and 4 weeks after each intervention. After the first intervention, 5.15% of the participants in the intervention group were vaccinated (1.57% in the control group). The increased likelihood of being vaccinated if a person had been sent an e-mail was 1.033 (95% confidence interval, 1.019-1.047; p = 0.001). This study highlighted the impact of e-mail as an appropriate method of communication for vaccination programmes.

5.
Clin Infect Dis ; 78(2): 476-483, 2024 02 17.
Artigo em Inglês | MEDLINE | ID: mdl-37864849

RESUMO

BACKGROUND: With more than 7500 cases reported since April 2022, Spain has experienced the highest incidence of mpox in Europe. From 12 July onward, the modified vaccinia Ankara-Bavaria Nordic (MVA-BN) smallpox vaccine was offered as pre-exposure prophylaxis for those receiving pre-exposure prophylaxis for human immunodeficiency virus (HIV-PrEP). Our aim was to assess the effectiveness of 1 dose of MVA-BN vaccine as pre-exposure prophylaxis against mpox virus (MPXV) infection in persons on HIV-PrEP. METHODS: National retrospective cohort study between 12 July and 12 December 2022. Individuals aged ≥18 years receiving HIV-PrEP as of 12 July with no previous MPXV infection or vaccination were eligible. Each day, we matched individuals receiving a first dose of vaccine and unvaccinated controls of the same age and region. We used a Kaplan-Meier estimator, calculated risk ratios (RR) and vaccine effectiveness (VE = [1 - RR]x100). RESULTS: We included 5660 matched pairs, with a median follow-up of 62 days (interquartile range, 24-97). Mpox cumulative incidence was 5.6 per 1000 (25 cases) in unvaccinated and 3.5 per 1000 (18 cases) in vaccinated. No effect was found during days 0-6 post-vaccination (VE, -38.3; 95% confidence interval [CI], -332.7 to 46.4), but VE was 65% at ≥7 days (95% CI, 22.9 to 88.0) and 79% at ≥14 days (95% CI, 33.3 to 100.0) post-vaccination. CONCLUSIONS: One dose of MVA-BN vaccine offered protection against mpox in most-at-risk population shortly after the vaccination. Further studies need to assess the VE of a second dose and the duration of protection over time.


Assuntos
Infecções por HIV , Mpox , Vacinas , Vacínia , Humanos , Adolescente , Adulto , Vacínia/prevenção & controle , Estudos de Coortes , Estudos Retrospectivos , Vaccinia virus , Vacinação , Monkeypox virus , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle
7.
Vaccines (Basel) ; 11(4)2023 Mar 25.
Artigo em Inglês | MEDLINE | ID: mdl-37112644

RESUMO

Despite the impact of the COVID-19 vaccination, vaccine hesitancy is a matter of concern. Despite a lower disease incidence, people continue to start primo-vaccination late. The aim of this study is to characterize people late primo-vaccinated and the reasons that led them to start vaccination. A quantitative, descriptive and prospective study was performed on the basis of phone surveys of people vaccinated from February to May 2022 in the Region of Murcia (Spain). The survey included socio-demographic and COVID-19 information, self-perception risk, vaccine security, Fear of COVID-19 Scale, reasons for not being vaccinated and reasons that have led them to vaccination. From a total of 1768 people receiving primo-vaccination, 798 people were contacted, and 338 people completed the survey. Among the interviewed people, 57% reported non-health-related reasons to get vaccinated, travel reasons being the primary one. The most reported health-related reason was a fear of COVID-19. There was a significant positive association between vaccination for health-related reasons and female gender (ß = 0.72), cohabiting with a vulnerable person (ß = 0.97), higher self-perceived risk (ß = 0.13) and vaccine security dimension (ß = 0.14). We identified two different profiles of people with late COVID-19 primo-vaccination, with health-related or non-health-related reasons. This work can be useful in designing specific communication strategies.

8.
Aten Primaria ; 55(6): 102629, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37119776

RESUMO

The influenza virus has accompanied humans since time immemorial, in the form of annual epidemics and occasional pandemics. It is a respiratory infection with multiple repercussions on people's lives at an individual and social level, as well as representing a significant burden on the health system. This Consensus Document arises from the collaboration of various Spanish scientific societies involved in influenza virus infection. The conclusions drawn are based on the highest quality evidence available in the scientific literature and, failing that, on the opinion of the experts convened. The Consensus Document addresses the clinical, microbiological, therapeutic, and preventive aspects (with respect to the prevention of transmission and in relation to vaccination) of influenza, for both adult and pediatric populations. This Consensus Document aims to help facilitate the clinical, microbiological, and preventive approach to influenza virus infection and, consequently, to reduce its important consequences on the morbidity and mortality of the population.


Assuntos
Doenças Transmissíveis , Influenza Humana , Orthomyxoviridae , Adulto , Criança , Humanos , Influenza Humana/diagnóstico , Influenza Humana/prevenção & controle , Saúde Pública , Medicina Comunitária , Vacinologia
9.
Hum Vaccin Immunother ; 19(1): 2202124, 2023 12 31.
Artigo em Inglês | MEDLINE | ID: mdl-37102330

RESUMO

The hexavalent vaccines DT3aP-HBV-IPV/Hib and DT2aP-HBV-IPV-Hib are routinely used for primary immunization of infants against diphtheria, tetanus, pertussis, hepatitis B virus, poliomyelitis, and Haemophilus influenzae type b. A recent publication showed that after primary immunization with these vaccines, the odds ratios of adverse reactions (ARs) were significantly lower for DT3aP-HBV-IPV/Hib than for DT2aP-HBV-IPV-Hib. Our aim is to understand the impact of the various reactogenicity profiles at country level by comparing the ARs induced by one dose of DT3aP-HBV-IPV/Hib versus DT2aP-HBV-IPV-Hib in the primary infant immunization course. A mathematical projection tool was developed to simulate vaccination of infants with both vaccines in six countries: Austria, the Czech Republic, France, Jordan, Spain, and the Netherlands. Proportions of three local and five systemic ARs of interest for both vaccines were based on findings from a previous meta-analysis of ARs in infants. The absolute risk reductions calculated ranged from 3.0% (95% confidence interval [CI]: 2.8%-3.2%) for "Swelling at the injection site, any grade" to 10.0% (95% CI: 9.5%-10.5%) for "Fever, any grade." The difference in occurrence of the AR "Fever, any grade" between vaccines in 2020 ranged from over 7,000 in Austria to over 62,000 in France. Over 5 years, this would amount to a reduction of over 150,000 ARs in Austria and over 1.4 million ARs in France when using DT3aP-HBV-IPV/Hib instead of DT2aP-HBV-IPV-Hib. In conclusion, the estimated numbers of ARs following hexavalent vaccination in six countries showed that vaccination of infants with DT3aP-HBV-IPV/Hib could lead to fewer ARs than vaccination with DT2aP-HBV-IPV-Hib.


Vaccination of infants against diphtheria, tetanus, pertussis, hepatitis B, poliomyelitis, and Haemophilus influenzae type b is often performed with combined vaccines against these six diseases. In many countries, these are the first vaccinations received by infants, and potential adverse reactions could affect compliance with future vaccinations. A previous study examined two of the combined vaccines, DT3aP-HBV-IPV/Hib and DT2aP-HBV-IPV-Hib, and showed that local adverse reactions at the injection site (pain, redness, and swelling) and general adverse reactions (fever, drowsiness, irritability, persistent crying, and lack of appetite) were less common after vaccination with DT3aP-HBV-IPV/Hib than with DT2aP-HBV-IPV-Hib.To understand the impact of this finding at a population level, we compared the adverse reactions caused by the hypothetical administration of the two vaccines under similar conditions. We simulated the vaccination of infants with both vaccines in six countries: Austria, the Czech Republic, France, Jordan, Spain, and the Netherlands.The simulation showed that the DT3aP-HBV-IPV/Hib vaccine could reduce cases of swelling at the injection site by 3% and fever by 10%. For the year 2020, the resulting reduction in the estimated number of fever occurrences would have ranged from over 7,000 in Austria to over 62,000 in France. In total, adverse reactions avoided could hypothetically have ranged from 30,781 in Austria to 269,025 in France. Over 5 years, this could have avoided an estimated number of adverse reactions of over 150,000 in Austria to over 1.4 million in France. In conclusion, such a switch of vaccine could substantially reduce adverse reactions.


Assuntos
Vacinas Anti-Haemophilus , Haemophilus influenzae tipo b , Humanos , Lactente , Vírus da Hepatite B , Vacina contra Difteria, Tétano e Coqueluche , Vacina Antipólio de Vírus Inativado , Vacinas contra Hepatite B , Vacinas Combinadas , Vacinação/efeitos adversos , Febre/induzido quimicamente , Esquemas de Imunização
10.
Enferm Infecc Microbiol Clin (Engl Ed) ; 41(2): 111-122, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36759049

RESUMO

The influenza virus has accompanied humans since time immemorial, in the form of annual epidemics and occasional pandemics. It is a respiratory infection with multiple repercussions on people's lives at an individual and social level, as well as representing a significant burden on the health system. This Consensus Document arises from the collaboration of various Spanish scientific societies involved in influenza virus infection. The conclusions drawn are based on the highest quality evidence available in the scientific literature and, failing that, on the opinion of the experts convened. The Consensus Document addresses the clinical, microbiological, therapeutic, and preventive aspects (with respect to the prevention of transmission and in relation to vaccination) of influenza, for both adult and pediatric populations. This Consensus Document aims to help facilitate the clinical, microbiological, and preventive approach to influenza virus infection and, consequently, to reduce its important consequences on the morbidity and mortality of the population.


Assuntos
Doenças Transmissíveis , Influenza Humana , Orthomyxoviridae , Adulto , Criança , Humanos , Influenza Humana/diagnóstico , Influenza Humana/prevenção & controle , Influenza Humana/tratamento farmacológico , Saúde Pública , Medicina Comunitária , Vacinologia
12.
N Engl J Med ; 388(5): 427-438, 2023 02 02.
Artigo em Inglês | MEDLINE | ID: mdl-36724329

RESUMO

BACKGROUND: In September 2015, the four-component, protein-based meningococcal serogroup B vaccine (4CMenB; Bexsero) became available for private purchase in Spain. METHODS: We conducted a nationwide matched case-control study to assess the effectiveness of 4CMenB in preventing invasive meningococcal disease in children. The study included all laboratory-confirmed cases of invasive meningococcal disease in children younger than 60 months of age between October 5, 2015, and October 6, 2019, in Spain. Each case patient was matched with four controls according to date of birth and province. 4CMenB vaccination status of the case patients and controls was compared with the use of multivariate conditional logistic regression. RESULTS: We compared 306 case patients (243 [79.4%] with serogroup B disease) with 1224 controls. A total of 35 case patients (11.4%) and 298 controls (24.3%) had received at least one dose of 4CMenB. The effectiveness of complete vaccination with 4CMenB (defined as receipt of at least 2 doses, administered in accordance with the manufacturer's recommendations) was 76% (95% confidence interval [CI], 57 to 87) against invasive meningococcal disease caused by any serogroup, and partial vaccination was 54% (95% CI, 18 to 74) effective. Complete vaccination resulted in an effectiveness of 71% (95% CI, 45 to 85) against meningococcal serogroup B disease. Vaccine effectiveness with at least one dose of 4CMenB was 64% (95% CI, 41 to 78) against serogroup B disease and 82% (95% CI, 21 to 96) against non-serogroup B disease. With the use of the genetic Meningococcal Antigen Typing System, serogroup B strains that were expected to be covered by 4CMenB were detected in 44 case patients, none of whom had been vaccinated. CONCLUSIONS: Complete vaccination with 4CMenB was found to be effective in preventing invasive disease by serogroup B and non-serogroup B meningococci in children younger than 5 years of age.


Assuntos
Infecções Meningocócicas , Vacinas Meningocócicas , Neisseria meningitidis Sorogrupo B , Criança , Humanos , Lactente , Estudos de Casos e Controles , Infecções Meningocócicas/microbiologia , Infecções Meningocócicas/prevenção & controle , Vacinas Meningocócicas/uso terapêutico , Neisseria meningitidis , Espanha
13.
An Pediatr (Engl Ed) ; 98(3): 213-227, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36813618

RESUMO

The influenza virus has accompanied humans since time immemorial, in the form of annual epidemics and occasional pandemics. It is a respiratory infection with multiple repercussions on people's lives at an individual and social level, as well as representing a significant burden on the health system. This Consensus Document arises from the collaboration of various Spanish scientific societies involved in influenza virus infection. The conclusions drawn are based on the highest quality evidence available in the scientific literature and, failing that, on the opinion of the experts convened. The Consensus Document addresses the clinical, microbiological, therapeutic, and preventive aspects (with respect to the prevention of transmission and in relation to vaccination) of influenza, for both adult and pediatric populations. This Consensus Document aims to help facilitate the clinical, microbiological, and preventive approach to influenza virus infection and, consequently, to reduce its important consequences on the morbidity and mortality of the population.


Assuntos
Doenças Transmissíveis , Influenza Humana , Orthomyxoviridae , Criança , Adulto , Humanos , Influenza Humana/diagnóstico , Influenza Humana/prevenção & controle , Saúde Pública , Medicina Comunitária , Vacinologia
14.
Enferm Infecc Microbiol Clin ; 41(1): 11-17, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36619362

RESUMO

Introduction: The state of alarm was declared in Spain due to the COVID-19 epidemic on March 14, 2020, and established population confinement measures. The objective is to describe the process of lifting these mitigation measures. Methods: The Plan for the Transition to a New Normality, approved on April 28, contained four sequential phases with progressive increase in socio-economic activities and population mobility. In parallel, a new strategy for early diagnosis, surveillance and control was implemented. A bilateral decision mechanism was established between the Spanish Government and the autonomous communities (AC), guided by a set of qualitative and quantitative indicators capturing the epidemiological situation and core capacities. The territorial units were established ad-hoc and could be from Basic Health Zones to entire AC. Results: The process run from May 4 to June 21, 2020. AC implemented plans for reinforcement of core capacities. Incidence decreased from a median (50% of territories) of 7.4 per 100,000 in 7 days at the beginning to 2.5 at the end. Median PCR testing increased from 53% to 89% of suspected cases and PCR total capacity from 4.5 to 9.8 per 1000 inhabitants weekly; positivity rate decreased from 3.5% to 1.8%. Median proportion of cases with traced contacts increased from 82% to 100%. Conclusion: Systematic data collection, analysis, and interterritorial dialogue allowed adequate process control. The epidemiological situation improved but, mostly, the process entailed a great reinforcement of core response capacities nation-wide, under common criteria. Maintaining and further reinforcing capacities remained crucial for responding to future waves.


Introducción: El 14 de marzo de 2020 España declaró el estado de alarma por la pandemia por COVID-19 incluyendo medidas de confinamiento. El objetivo es describir el proceso de desescalada de estas medidas. Métodos: Un plan de transición hacia una nueva normalidad, del 28 de abril, incluía 4 fases secuenciales incrementando progresivamente las actividades socioeconómicas y la movilidad. Concomitantemente, se implementó una nueva estrategia de diagnóstico precoz, vigilancia y control. Se estableció un mecanismo de decisión bilateral entre Gobierno central y comunidades autónomas (CCAA), guiado por un panel de indicadores cualitativos y cuantitativos de la situación epidemiológica y las capacidades básicas. Las unidades territoriales evaluadas comprendían desde zonas básicas de salud hasta CCAA. Resultados: El proceso se extendió del 4 de mayo al 21 de junio y se asoció a planes de refuerzo de las capacidades en las CCAA. La incidencia disminuyó de una mediana inicial de 7,4 por 100.000 en 7 días a 2,5 al final del proceso. La mediana de pruebas PCR aumentó del 53% al 89% de los casos sospechosos, y la capacidad total de 4,5 a 9,8 pruebas semanales por 1.000 habitantes; la positividad disminuyó del 3,5% al 1,8%. La mediana de casos con contactos trazados aumentó del 82% al 100%. Conclusión: La recogida y análisis sistemático de información y el diálogo interterritorial logaron un adecuado control del proceso. La situación epidemiológica mejoró, pero sobre todo, se aumentaron las capacidades, en todo el país y con criterios comunes, cuyo mantenimiento y refuerzo fue clave en olas sucesivas.

15.
Artigo em Inglês | MEDLINE | ID: mdl-36621243

RESUMO

INTRODUCTION: The state of alarm was declared in Spain due to the COVID-19 epidemic on March 14, 2020, and established population confinement measures. The objective is to describe the process of lifting these mitigation measures. METHODS: The Plan for the Transition to a New Normality, approved on April 28, contained four sequential phases with progressive increase in socio-economic activities and population mobility. In parallel, a new strategy for early diagnosis, surveillance and control was implemented. A bilateral decision mechanism was established between the Spanish Government and the autonomous communities (AC), guided by a set of qualitative and quantitative indicators capturing the epidemiological situation and core capacities. The territorial units were established ad-hoc and could be from Basic Health Zones to entire AC. RESULTS: The process run from May 4 to June 21, 2020. AC implemented plans for reinforcement of core capacities. Incidence decreased from a median (50% of territories) of 7.4 per 100,000 in 7 days at the beginning to 2.5 at the end. Median PCR testing increased from 53% to 89% of suspected cases and PCR total capacity from 4.5 to 9.8 per 1000 inhabitants weekly; positivity rate decreased from 3.5% to 1.8%. Median proportion of cases with traced contacts increased from 82% to 100%. CONCLUSION: Systematic data collection, analysis, and interterritorial dialogue allowed adequate process control. The epidemiological situation improved but, mostly, the process entailed a great reinforcement of core response capacities nation-wide, under common criteria. Maintaining and further reinforcing capacities remained crucial for responding to future waves.


Assuntos
COVID-19 , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Teste para COVID-19 , SARS-CoV-2 , Espanha/epidemiologia
16.
Rev Med Virol ; 33(3): e2330, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-35119149

RESUMO

This review sought to assess the efficacy, effectiveness and safety of high-dose inactivated influenza vaccines (HD-IIV) for the prevention of laboratory-confirmed influenza in individuals aged 18 years or older. A systematic literature search was conducted in electronic databases and grey literature sources up to 7 February 2020. Randomised controlled trials (RCTs) and non-randomised studies of interventions (NRSIs) were included. The search returned 28,846 records, of which 36 studies were included. HD-IIV was shown to have higher relative vaccine efficacy in preventing influenza compared with standard-dose influenza vaccines (SD-IIV3) in older adults (Vaccine effectiveness (VE) = 24%, 95% CI 10-37, one RCT). One NRSI demonstrated significant effect for HD-IIV3 against influenza B (VE = 89%, 95% CI 47-100), but not for influenza A(H3N2) (VE = 22%, 95% CI -82 to 66) when compared with no vaccination in older adults. HD-IIV3 showed significant relative effect compared with SD-IIV3 for influenza-related hospitalisation (VE = 11.8%, 95% CI 6.4-17.0, two NRSIs), influenza- or pneumonia-related hospitalisation (VE = 13.7%, 95% CI 9.5-17.7, three NRSIs), influenza-related hospital encounters (VE = 13.1%, 95% CI 8.4-17.7, five NRSIs), and influenza-related office visits (VE = 3.5%, 95% CI 1.5-5.5, two NRSIs). For safety, HD-IIV were associated with significantly higher rates of local and systemic adverse events compared with SD-IIV (combined local reactions, pain at injection site, swelling, induration, headache, chills and malaise). From limited data, compared with SD-IIV, HD-IIV were found to be more effective in the prevention of laboratory-confirmed influenza, for a range of proxy outcome measures, and associated with more adverse events.


Assuntos
Vacinas contra Influenza , Influenza Humana , Adolescente , Idoso , Humanos , Influenza Humana/prevenção & controle , Estações do Ano , Vacinação/efeitos adversos , Vacinas de Produtos Inativados/efeitos adversos
17.
Rev Med Virol ; 33(3): e2332, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-35137512

RESUMO

The most effective means of preventing seasonal influenza is through strain-specific vaccination. In this study, we investigated the efficacy, effectiveness and safety of cell-based trivalent and quadrivalent influenza vaccines. A systematic literature search was conducted in electronic databases and grey literature sources up to 7 February 2020. Randomised controlled trials (RCTs) and non-randomised studies of interventions (NRSIs) were eligible for inclusion. Two reviewers independently screened, extracted data and assessed the risk of bias of included studies. Certainty of evidence for key outcomes was assessed using the GRADE methodology. The search returned 28,846 records, of which 868 full-text articles were assessed for relevance. Of these, 19 studies met the inclusion criteria. No relative efficacy data were identified for the direct comparison of cell-based vaccines compared with traditional vaccines (egg-based). Efficacy data were available comparing cell-based trivalent influenza vaccines with placebo in adults (aged 18-49 years). Overall vaccine efficacy was 70% against any influenza subtype (95% CI 61%-77%, two RCTS), 82% against influenza A(H1N1) (95% CI 71%-89%, 2 RCTs), 72% against influenza A(H3N2) (95% CI 39%-87%, 2 RCTs) and 52% against influenza B (95% CI 30%-68%, 2 RCTs). Limited and heterogeneous data were presented for effectiveness when compared with no vaccination. One NRSI compared cell-based trivalent and quadrivalent vaccination with traditional trivalent and quadrivalent vaccination, finding a small but significant difference in favour of cell-based vaccines for influenza-related hospitalisation, hospital encounters and physician office visits. The safety profile of cell-based trivalent vaccines was comparable to traditional trivalent influenza vaccines. Compared with placebo, cell-based trivalent influenza vaccines have demonstrated greater efficacy in adults aged 18-49 years. Overall cell-based vaccines are well-tolerated in adults, however, evidence regarding the effectiveness of these vaccines compared with traditional seasonal influenza vaccines is limited.


Assuntos
Vacinas contra Influenza , Influenza Humana , Adolescente , Adulto , Humanos , Hospitalização , Estações do Ano , Vacinação
19.
Enferm Clin (Engl Ed) ; 28(6): 375-381, 2018.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-28342711

RESUMO

OBJECTIVE: Splenectomy patients have a high risk of suffering severe infections, many of them preventable by vaccination. The aim of the study was to analyse the clinical epidemiological characteristics and vaccine coverage of these patients in Health Area III of the Region of Murcia. METHOD: A cross-sectional study was conducted on a population of patients that were splenectomised during the period 1993-2012, according to the Register of the Basic Minimum Data Set. Patients were classified on the basis of splenectomy (neoplasm, haematological diseases, trauma, and others), vaccination, and vital status, using official records of health data. Statistical analysis was performed using SPSS 21.0 statistics program. RESULTS: The sample consisted of 196 patients, of which 68.4% (n=134) were male. The mean age at which they underwent splenectomy was 50.1 years (SD: 22.2). The most common reason for removal of the spleen was neoplasia in 39.1% (n=59). Splenectomy due to trauma reasons was associated with lower patient age (p<.001) and male gender (p=.03). Vaccination coverage for Streptococcus pneumoniae was 23.8%, 5.7% for Neisseria meningitidis C, and 8.6% for Haemophilus influenzae B. Only 2.9% of patients were correctly vaccinated for all three. CONCLUSIONS: Vaccination coverage was insufficient for this fragile patient profile. It should be taken into account in the early detection and counselling in this group so susceptible to disease, with nurses being a decisive part in the process.


Assuntos
Esplenectomia , Cobertura Vacinal/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Espanha , Fatores de Tempo , Adulto Jovem
20.
Hum Vaccin Immunother ; 13(7): 1714-1721, 2017 07 03.
Artigo em Inglês | MEDLINE | ID: mdl-28362552

RESUMO

Outbreaks in temporary camps are an important risk for the health of the displaced population. The town of Lorca (Murcia, Spain) suffered 2 earthquakes on May 2011 that required the re-housing of 1,424 victims in a temporary camp. Following 4 cases of chickenpox control measures were adopted among the displaced population. These measures included vaccination against chickenpox; due to the existence of cases of measles in adjacent regions, it was decided to offer measles, mumps and rubella (MMR) vaccination as well. The immunization campaign was performed during 2 d (3 to 4 d after the first case). The immunity status of 1,041 (73,1%) of the residents was reviewed. Being vaccinated 523 (67%) against chickenpox and MMR, 133 (17%) against only MMR and 124 (16%) against only chickenpox. We consider the action taken was a success, as only 4 additional cases of chickenpox were subsequently recorded in the campsite, being avoidable only one of them. There is a major risk of outbreaks in a disaster situation. Because of this, conducting preventive actions are indicated to avoid doing worse this critical.


Assuntos
Vacina contra Varicela/administração & dosagem , Varicela/epidemiologia , Terremotos , Programas de Imunização , Vacina contra Sarampo-Caxumba-Rubéola/administração & dosagem , Sarampo/epidemiologia , Campos de Refugiados , Adolescente , Adulto , Idoso , Varicela/prevenção & controle , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Sarampo/prevenção & controle , Pessoa de Meia-Idade , Espanha/epidemiologia , Adulto Jovem
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