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1.
Ann Ig ; 36(6): 660-667, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38717344

RESUMO

Introduction: Despite global immunization efforts, rubella remains a public health concern, particularly in high- and middle-income countries. This study focused on rubella seroprevalence in the province of Florence, Italy, aiming to identify susceptibility clusters, especially among women in their childbearing age. Methods: A cross-sectional study was conducted between April 2018 and December 2019, enrolling 430 adult subjects (age over 18 years). Serum samples were collected, and anti-rubella antibodies were quantified using the ELISA test. Data were analyzed descriptively and compared by sex, nationality, and age groups using statistical tests. Results: The overall rubella seroprevalence was high (92.3%), with no significant differences between genders or nationalities. Among childbearing-age females (18-49 years), the highest seroprevalence was observed in the 30-39 age group (94.1%). However, susceptibility clusters exceeding the 5% threshold set by WHO were identified, especially in females aged 40-49 years (7.0%). Conclusions: Despite high overall seroprevalence, the study identified pockets of susceptibility, even in childbearing age women. Continuous monitoring, targeted immunization strategies, and public health interventions are recommended to maintain rubella elimination, emphasizing the importance of sustained vaccination efforts to protect vulnerable populations.


Assuntos
Rubéola (Sarampo Alemão) , Humanos , Estudos Soroepidemiológicos , Itália/epidemiologia , Feminino , Adulto , Estudos Transversais , Pessoa de Meia-Idade , Masculino , Adolescente , Adulto Jovem , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/prevenção & controle , Rubéola (Sarampo Alemão)/imunologia , Anticorpos Antivirais/sangue , Ensaio de Imunoadsorção Enzimática , Idoso
2.
Am J Trop Med Hyg ; 111(1): 121-128, 2024 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-38772386

RESUMO

Countries with moderate to high measles-containing vaccine coverage face challenges in reaching the remaining measles zero-dose children. There is growing interest in targeted vaccination activities to reach these children. We developed a framework for prioritizing districts for targeted measles and rubella supplementary immunization activities (SIAs) for Zambia in 2020, incorporating the use of the WHO's Measles Risk Assessment Tool (MRAT) and serosurveys. This framework was used to build a model comparing the cost of vaccinating one zero-dose child under three vaccination scenarios: standard nationwide SIA, targeted subnational SIA informed by MRAT, and targeted subnational SIA informed by both MRAT and measles seroprevalence data. In the last scenario, measles seroprevalence data are acquired via either a community-based serosurvey, residual blood samples from health facilities, or community-based IgG point-of-contact rapid diagnostic testing. The deterministic model found that the standard nationwide SIA is the least cost-efficient strategy at 13.75 USD per zero-dose child vaccinated. Targeted SIA informed by MRAT was the most cost-efficient at 7.63 USD per zero-dose child, assuming that routine immunization is just as effective as subnational SIA in reaching zero-dose children. Under similar conditions, a targeted subnational SIA informed by both MRAT and seroprevalence data resulted in 8.17-8.35 USD per zero-dose child vaccinated, suggesting that use of seroprevalence to inform SIA planning may not be as cost prohibitive as previously thought. Further refinement to the decision framework incorporating additional data may yield strategies to better target the zero-dose population in a financially feasible manner.


Assuntos
Vacina contra Sarampo , Sarampo , Humanos , Zâmbia/epidemiologia , Sarampo/prevenção & controle , Sarampo/epidemiologia , Sarampo/economia , Vacina contra Sarampo/economia , Vacina contra Sarampo/administração & dosagem , Vacina contra Sarampo/imunologia , Vacinação/economia , Vacinação/métodos , Estudos Soroepidemiológicos , Análise Custo-Benefício , Pré-Escolar , Programas de Imunização/economia , Lactente , Criança , Rubéola (Sarampo Alemão)/prevenção & controle , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/economia
3.
BMJ Glob Health ; 8(7)2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37429697

RESUMO

BACKGROUND: Since 2000, the incidence of measles and rubella has declined as measles-rubella (MR) vaccine coverage increased due to intensified routine immunisation (RI) and supplementary immunisation activities (SIAs). The World Health Assembly commissioned a feasibility assessment of eliminating measles and rubella. The objective of this paper is to present the findings of cost-effectiveness analysis (CEA) of ramping up MR vaccination with a goal of eliminating transmission in every country. METHODS: We used projections of impact of routine and SIAs during 2018-2047 for four scenarios of ramping up MR vaccination. These were combined with economic parameters to estimate costs and disability-adjusted life years averted under each scenario. Data from the literature were used for estimating the cost of increasing routine coverage, timing of SIAs and introduction of rubella vaccine in countries. RESULTS: The CEA showed that all three scenarios with ramping up coverage above the current trend were more cost-effective in most countries than the 2018 trend for both measles and rubella. When the measles and rubella scenarios were compared with each other, the most cost-effective scenario was likely to be the most accelerated one. Even though this scenario is costlier, it averts more cases and deaths and substantially reduces the cost of treatment. CONCLUSIONS: The Intensified Investment scenario is likely the most cost-effective of the vaccination scenarios evaluated for reaching both measles and rubella disease elimination. Some data gaps on costs of increasing coverage were identified and future efforts should focus on filling these gaps.


Assuntos
Sarampo , Rubéola (Sarampo Alemão) , Humanos , Análise Custo-Benefício , Países em Desenvolvimento , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/prevenção & controle , Sarampo/epidemiologia , Sarampo/prevenção & controle , Pobreza
4.
BMJ Open ; 12(12): e066288, 2022 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-36456017

RESUMO

OBJECTIVES: To quantify the effect of the COVID-19 pandemic on the timeliness of, and geographical and sociodemographic inequalities in, receipt of first measles, mumps and rubella (MMR) vaccination. DESIGN: Longitudinal study using primary care electronic health records. SETTING: 285 general practices in North East London. PARTICIPANTS: Children born between 23 August 2017 and 22 September 2018 (pre-pandemic cohort) or between 23 March 2019 and 1 May 2020 (pandemic cohort). MAIN OUTCOME MEASURE: Receipt of timely MMR vaccination between 12 and 18 months of age. METHODS: We used logistic regression to estimate the ORs (95% CIs) of receipt of a timely vaccination adjusting for sex, deprivation, ethnic background and Clinical Commissioning Group. We plotted choropleth maps of the proportion receiving timely vaccinations. RESULTS: Timely MMR receipt fell by 4.0% (95% CI: 3.4% to 4.6%) from 79.2% (78.8% to 79.6%) to 75.2% (74.7% to 75.7%) in the pre-pandemic (n=33 226; 51.3% boys) and pandemic (n=32 446; 51.4%) cohorts, respectively. After adjustment, timely vaccination was less likely in the pandemic cohort (0.79; 0.76 to 0.82), children from black (0.70; 0.65 to 0.76), mixed/other (0.77; 0.72 to 0.82) or with missing (0.77; 0.74 to 0.81) ethnic background, and more likely in girls (1.07; 1.03 to 1.11) and those from South Asian backgrounds (1.39; 1.30 to 1.48). Children living in the least deprived areas were more likely to receive a timely MMR (2.09; 1.78 to 2.46) but there was no interaction between cohorts and deprivation (Wald statistic: 3.44; p=0.49). The proportion of neighbourhoods where less than 60% of children received timely vaccination increased from 7.5% to 12.7% during the pandemic. CONCLUSIONS: The COVID-19 pandemic was associated with a significant fall in timely MMR receipt and increased geographical clustering of measles susceptibility in an area of historically low and inequitable MMR coverage. Immediate action is needed to avert measles outbreaks and support primary care to deliver timely and equitable vaccinations.


Assuntos
COVID-19 , Sarampo , Caxumba , Rubéola (Sarampo Alemão) , Masculino , Criança , Feminino , Humanos , Caxumba/epidemiologia , Caxumba/prevenção & controle , Pandemias , COVID-19/epidemiologia , COVID-19/prevenção & controle , Estudos Longitudinais , Registros Eletrônicos de Saúde , Londres/epidemiologia , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/prevenção & controle , Sarampo/epidemiologia , Sarampo/prevenção & controle , Vacinação
5.
PLoS Negl Trop Dis ; 16(10): e0010861, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-36240247

RESUMO

BACKGROUND: Congenital TORCH (Toxoplasma gondii (T. gondii), rubella virus (RV), cytomegalovirus (CMV), and herpes simplex virus (HSV)) infections are associated with a variety of adverse prenatal and neonatal events, including miscarriage, malformations and developmental abnormalities, and they remain an issue that cannot be neglected in China. However, the current research focuses more on the general screening of TORCH in women of childbearing age, and the medical information of children hospitalized due to congenital and perinatal TORCH infections has not been described in detail. This study summarized and analyzed the epidemiological characteristics, clinical manifestations, length of stay (LOS), and the disease burden of hospitalized children diagnosed with congenital TORCH infections in 27 children's hospitals in China. METHODOLOGY: Based on the face sheet of discharge medical records (FSMRs) of hospitalized children in 27 tertiary children's hospitals collected in the Futang Research Center of Pediatric Development and aggregated into FUTang Update medical REcords (FUTURE), we summarized and analyzed the epidemiological characteristics, clinical manifestations, LOS, the disease burden (in US dollars, USD) and potential risk factors for hospitalized children diagnosed with congenital toxoplasmosis, congenital rubella syndrome, congenital cytomegalovirus infection, and congenital HSV in 27 children's hospitals in China from 2015 to 2020. RESULTS: One hundred seventy-three patients aged 0-<1 year were hospitalized for congenital TORCH infections. Among infections with TORCH, hospitalization with congenital toxoplasmosis was the least common, with only five cases were reported (2.89%), while the LOS was the highest. The proportion of patients with congenital rubella syndrome (CRS) was 15.61%, and 86% of children hospitalized with CRS had cardiovascular malformations, and the economic burden was the highest. Congenital CMV infection cases accounted for the largest proportion (76.30%). Overall, 5.20% of patients were infected with HSV, and the expense of hospitalization for congenital HSV infection was relatively low. CONCLUSION: In the present study, the hospitalization proportion due to congenital TORCH infection was extremely low (17.56 per 100,000 neonates), indicating that China's congenital TORCH infection prevention and control policies remain effective. The lowest proportion of patients was hospitalized with congenital toxoplasmosis, while the LOS was the longest. The economic burden of CRS was heavy, and infants are recommended be vaccinated against RV in a timely manner. Congenital CMV infections accounted for the largest proportion of patients, suggesting that the disease burden of congenital CMV infection cannot be ignored, and the prevention of congenital CMV infection during pregnancy is still an important issue that needs to pay attention. The expense of hospitalization for congenital HSV infection was relatively low, while the disease burden increases significantly when patients develop complications. These data illustrate the importance of improving screening for congenital TORCH infections in the early diagnosis and treatment of neonatal patients.


Assuntos
Doenças Transmissíveis , Infecções por Citomegalovirus , Doenças Fetais , Doenças do Recém-Nascido , Complicações Infecciosas na Gravidez , Síndrome da Rubéola Congênita , Rubéola (Sarampo Alemão) , Toxoplasmose Congênita , Toxoplasmose , Gravidez , Recém-Nascido , Humanos , Feminino , Criança , Toxoplasmose/epidemiologia , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/complicações , Rubéola (Sarampo Alemão)/diagnóstico , Estudos Transversais , Criança Hospitalizada , Complicações Infecciosas na Gravidez/epidemiologia , Complicações Infecciosas na Gravidez/diagnóstico , Infecções por Citomegalovirus/epidemiologia , Infecções por Citomegalovirus/complicações , Infecções por Citomegalovirus/diagnóstico , Doenças Transmissíveis/complicações , Efeitos Psicossociais da Doença
7.
PLoS Comput Biol ; 18(3): e1008858, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-35239641

RESUMO

The basic reproduction number (R0) of an infection determines the impact of its control. For many endemic infections, R0 is often estimated from appropriate country-specific seroprevalence data. Studies sometimes pool estimates from the same region for settings lacking seroprevalence data, but the reliability of this approach is unclear. Plausibly, indicator-based approaches could predict R0 for such settings. We calculated R0 for rubella for 98 settings and correlated its value against 66 demographic, economic, education, housing and health-related indicators. We also trained a random forest regression algorithm using these indicators as the input and R0 as the output. We used the mean-square error to compare the performances of the random forest, simple linear regression and a regional averaging method in predicting R0 using 4-fold cross validation. R0 was <5, 5-10 and >10 for 81, 14 and 3 settings respectively, with no apparent regional differences and in the limited available data, it was usually lower for rural than urban areas. R0 was most correlated with educational attainment, and household indicators for the Pearson and Spearman correlation coefficients respectively and with poverty-related indicators followed by the crude death rate considering the Maximum Information Coefficient, although the correlation for each was relatively weak (Pearson correlation coefficient: 0.4, 95%CI: (0.24,0.48) for educational attainment). A random forest did not perform better in predicting R0 than simple linear regression, depending on the subsets of training indicators and studies, and neither out-performed a regional averaging approach. R0 for rubella is typically low and using indicators to estimate its value is not straightforward. A regional averaging approach may provide as reliable an estimate of R0 for settings lacking seroprevalence data as one based on indicators. The findings may be relevant for other infections and studies estimating the disease burden and the impact of interventions for settings lacking seroprevalence data.


Assuntos
Rubéola (Sarampo Alemão) , Número Básico de Reprodução , Humanos , Reprodutibilidade dos Testes , Rubéola (Sarampo Alemão)/epidemiologia , População Rural , Estudos Soroepidemiológicos
8.
Ann Clin Lab Sci ; 51(6): 852-860, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34921039

RESUMO

OBJECTIVE: Rubella is a highly contagious viral disease with a significant teratogenic effect. Various results have been published about the seroprevalence of rubella in Iran. A PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses)-systematic review and meta-analysis were conducted to assess the immunity against rubella in Iranian women. METHODS: Eleven English and Persian electronic databases including PubMed, ScienceDirect, Scopus, Web of Science, Google Scholar, Embase, Scientific Information Database, Iran doc, Iran Medex, Magiran, and Medlib were searched using the keywords: Epidemiology, Prevalence, Rubella, Women, Childbearing age, Reproductive age, and Iran. A mathematician (NS) reviewed all steps for accuracy. RESULTS: Out of 1,520 articles, 25 well-conducted studies with a total amount of 10,145 women were reviewed. The pooled prevalence rate of anti-rubella IgG was 84% (95% CI: 83%-86%). The highest prevalence rate of IgG was in Zahedan, Rasht, and Arak (each 100%), while the lowest prevalence was in Jahrom (54%). Subgroup analysis showed that from 1989 through 2012, the IgG prevalence rate increased from 78% (95% CI: 73-83%) to 99% (95% CI: 98 100%). CONCLUSIONS: Although the vaccination program seems working in Iran, some peripheral regions may be a target to improve health care policies.


Assuntos
Anticorpos Antivirais/sangue , Rubéola (Sarampo Alemão) , Cobertura Vacinal , Adulto , Notificação de Doenças/métodos , Notificação de Doenças/estatística & dados numéricos , Feminino , Necessidades e Demandas de Serviços de Saúde , Humanos , Irã (Geográfico)/epidemiologia , Prevalência , Rubéola (Sarampo Alemão)/diagnóstico , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/imunologia , Rubéola (Sarampo Alemão)/prevenção & controle , Estudos Soroepidemiológicos , Cobertura Vacinal/organização & administração , Cobertura Vacinal/normas
9.
J Infect Dis ; 224(12 Suppl 2): S360-S366, 2021 09 30.
Artigo em Inglês | MEDLINE | ID: mdl-34590132

RESUMO

Rubella virus is the most teratogenic virus known to science and is capable of causing large epidemics. The RA 27/3 rubella vaccine, usually combined with measles vaccine, has eliminated rubella and congenital rubella syndrome from much of the world, notably from the Western Hemisphere. Except in immunosuppressed individuals, it is remarkably safe. Together with rubella vaccine strains used in China and Japan, eradication of the rubella virus is possible, indeed more feasible than eradication of measles or mumps.


Assuntos
Vacina contra Sarampo-Caxumba-Rubéola , Vírus da Rubéola/imunologia , Rubéola (Sarampo Alemão)/prevenção & controle , Anticorpos Antivirais , Erradicação de Doenças , Carga Global da Doença , Humanos , Lactente , Rubéola (Sarampo Alemão)/epidemiologia
10.
Vaccine ; 39(27): 3544-3559, 2021 06 16.
Artigo em Inglês | MEDLINE | ID: mdl-34045102

RESUMO

This report addresses the epidemiological aspects and feasibility of measles and rubella eradication and the potential resource requirements in response to the request of the Director-General at the Seventieth World Health Assembly held on May 31, 2017. A guiding principle is that the path toward measles and rubella eradication should serve to strengthen primary health care, promote universal health coverage, and be a pathfinder for new vision and strategy for immunization over the next decade as laid out in the Immunization Agenda 2030. Specifically, this report: 1) highlights the importance of measles and rubella as global health priorities; 2) reviews the current global measles and rubella situation; 3) summarizes prior assessments of the feasibility of measles and rubella eradication; 4) assesses the progress and challenges in achieving regional measles and rubella elimination; 5) assesses additional considerations for measles and rubella eradication, including the results of modelling and economic analyses; 6) assesses the implications of establishing a measles and rubella eradication goal and the process for setting an eradication target date; 7) proposes a framework for determining preconditions for setting a target date for measles and rubella eradication and how these preconditions should be understood and used; and 8) concludes with recommendations endorsed by SAGE.


Assuntos
Sarampo , Rubéola (Sarampo Alemão) , Erradicação de Doenças , Estudos de Viabilidade , Saúde Global , Humanos , Programas de Imunização , Sarampo/epidemiologia , Sarampo/prevenção & controle , Vacina contra Sarampo , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/prevenção & controle
11.
PLoS One ; 15(10): e0240734, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33057405

RESUMO

BACKGROUND: Serosurveys are a valuable surveillance tool because they provide a more direct measure of population immunity to infectious diseases, such as measles and rubella, than vaccination coverage estimates. However, there is concern that serological surveys are costly. We adapted a framework to capture the costs associated with conducting a serosurvey in Zambia. METHODS: We costed a nested serosurvey in Southern Province, Zambia that collected dried blood spots from household residents in a post-campaign vaccine coverage survey. The financial costs were estimated using an ingredients-based costing approach. Inputs included personnel, transportation, field consumable items, social mobilization, laboratory supplies, and capital items, and were classified by serosurvey function (survey preparation, data collection, biospecimen collection, laboratory testing, and coordination). Inputs were stratified by whether they were applicable to surveys in general or attributable specifically to serosurveys. Finally, we calculated the average cost per cluster and participant. RESULTS: We estimated the total nested serosurvey cost was US $68,558 to collect dried blood spots from 658 participants in one province in Zambia. A breakdown of the cost by serosurvey phase showed data collection accounted for almost one third of the total serosurvey cost (32%), followed by survey preparation (25%) and biospecimen collection (20%). Analysis by input categories indicated personnel costs were the largest contributing input to overall serosurvey costs (51%), transportation was second (23%), and field consumables were third (9%). By combining the serosurvey with a vaccination coverage survey, there was a savings of $43,957. We estimated it cost $4,285 per average cluster and $104 per average participant sampled. CONCLUSIONS: Adding serological specimen collection to a planned vaccination coverage survey provided a more direct measurement of population immunity among a wide age group but increased the cost by approximately one-third. Future serosurveys could consider ways to leverage existing surveys conducted for other purposes to minimize costs.


Assuntos
Custos e Análise de Custo , Imunidade , Sarampo/sangue , Sarampo/economia , Rubéola (Sarampo Alemão)/sangue , Rubéola (Sarampo Alemão)/economia , Inquéritos e Questionários , Humanos , Sarampo/epidemiologia , Vacina contra Sarampo/economia , Rubéola (Sarampo Alemão)/epidemiologia , Vacina contra Rubéola/economia , Estudos Soroepidemiológicos , Zâmbia/epidemiologia
13.
J Infect Public Health ; 13(4): 480-484, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32113699

RESUMO

BACKGROUND: Health care workers (HCWs) and students are at increased risk for blood borne infections and vaccine preventable diseases (VPDs). The aim of this study was to determine the seroprevalence of antibodies against measles, rubella, mumps, varicella zoster virus (VZV), hepatitis A and B viruses among HCWs and students and to determine whether there are differences according to gender and age group. METHODS: Information about characteristics of the 1053 participants, history of disease and vaccination status were collected using a structured questionnaire. Serum samples were tested for antibodies by commercial immunoenzymatic assays. RESULTS: Seropositivity rates were 57.1% for measles, 74% for mumps, 96.3% for rubella, 93.7% for VZV, 33.9% for hepatitis A virus and 92.2% for hepatitis B virus. Susceptibility rates among participants 18-26, 27-38 and >38 years of age were statistically significant for measles (46%, 18.6% and 0%; p < 0.001) and mumps (27.1%, 12.9% and 21.4%; p < 0.05), respectively. CONCLUSION: Low seropositivity rates for measles, mumps and HAV are important findings. For other diseases other than VZV, it is thought that vaccination without pre-screening is more appropriate. Healthcare institutions should have policies for screening and vaccination of their staff and students.


Assuntos
Varicela/epidemiologia , Pessoal de Saúde , Hepatite A/epidemiologia , Hepatite B/epidemiologia , Programas de Rastreamento , Sarampo/epidemiologia , Caxumba/epidemiologia , Rubéola (Sarampo Alemão)/epidemiologia , Estudantes de Medicina , Estudantes de Enfermagem , Vacinação , Adolescente , Adulto , Varicela/prevenção & controle , Análise Custo-Benefício , Ensaio de Imunoadsorção Enzimática , Feminino , Pessoal de Saúde/estatística & dados numéricos , Hepatite A/prevenção & controle , Hepatite B/prevenção & controle , Humanos , Masculino , Programas de Rastreamento/métodos , Sarampo/prevenção & controle , Pessoa de Meia-Idade , Caxumba/prevenção & controle , Estudos Retrospectivos , Rubéola (Sarampo Alemão)/prevenção & controle , Estudos Soroepidemiológicos , Estudantes de Medicina/estatística & dados numéricos , Estudantes de Enfermagem/estatística & dados numéricos , Inquéritos e Questionários , Turquia/epidemiologia , Vacinação/métodos , Adulto Jovem
14.
J Med Virol ; 92(8): 963-970, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-31919861

RESUMO

Seroprevalence studies on measles, mumps, and rubella immunoglobulin G (IgG) antibodies after the implementation of the measles-mumps-rubella (MMR) vaccine are lacking in Kuwait. This study is an age-stratified serological study to assess the herd immunity to measles, mumps, and rubella among the young Kuwaiti population to evaluate the effectiveness of the MMR vaccine. IgG antibody titers to mumps, measles, and rubella were determined with commercial immune-assay in serum samples of 1000 Kuwaitis aged 5 to 20 years. The highest level of seropositivity was to measles (94.6%), which was significantly higher in females than in males. The highest seronegativity was for mumps (29%). The percentage of the young Kuwaiti population who were serologically positive for all the components of the MMR vaccine was 47%, and 2% of the individuals were without any protective antibodies to measles, mumps, and rubella. Females aged 5 to 10 years were best protected to rubella; however, seronegativity in 8.2% of 11- to 20-year-old females makes them vulnerable to rubella virus infection and congenital complications during pregnancy. The study provided insight into the effect of the MMR vaccine on seroprevalence of antibodies against measles, mumps, and rubella in Kuwait, which will contribute to the global knowledge base of vaccine coverage and help to inform elimination strategies. The findings strengthen the need for a third dose of MMR vaccine and catch-up campaigns for the young Kuwaiti population to increase vaccination coverage and prevent waning immunity, especially among those who received only one dose of the vaccine during childhood.


Assuntos
Anticorpos Antivirais/sangue , Vírus do Sarampo/imunologia , Vacina contra Sarampo-Caxumba-Rubéola/imunologia , Vírus da Caxumba/imunologia , Vírus da Rubéola/imunologia , Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Imunidade , Imunoglobulina G/sangue , Kuweit/epidemiologia , Masculino , Sarampo/epidemiologia , Sarampo/imunologia , Caxumba/epidemiologia , Caxumba/imunologia , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/imunologia , Estudos Soroepidemiológicos , Adulto Jovem
15.
J Med Virol ; 92(3): 279-287, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31598987

RESUMO

Rubella virus causes a mild disease; however, infection during the first trimester of pregnancy may lead to congenital rubella syndrome (CRS) in over 80% of affected pregnancies. Vaccination is recommended and has been shown to effectively reduce CRS incidence. Uganda plans to introduce routine rubella vaccination in 2019. The World Health Organization recommends assessing the disease burden and obtaining the baseline molecular virological data before vaccine introduction. Sera collected during case-based measles surveillance from January 2005 to July 2018 were tested for rubella immunoglobulin M (IgM) antibodies. Sera from confirmed rubella outbreaks from January 2012 to August 2017 were screened using real-time reverse-transcription polymerase chain reaction (RT-PCR); for positive samples, a region within the E1 glycoprotein coding region was amplified and sequenced. Of the 23 196 suspected measles cases serologically tested in parallel for measles and rubella, 5334 (23%) were rubella IgM-positive of which 2710 (50.8%) cases were females with 2609 (96.3%) below 15 years of age. Rubella IgM-positive cases were distributed throughout the country and the highest number was detected in April, August, and November. Eighteen (18%) of the 100 sera screened were real-time RT-PCR-positive of which eight (44.4%) were successfully sequenced and genotypes 1G and 2B were identified. This study reports on the seroprevalence and molecular epidemiology of rubella. Increased knowledge of former and current rubella viruses circulating in Uganda will enhance efforts to monitor the impact of vaccination as Uganda moves toward control and elimination of rubella and CRS.


Assuntos
Anticorpos Antivirais/sangue , Vírus da Rubéola/classificação , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/virologia , Adolescente , Criança , Pré-Escolar , Efeitos Psicossociais da Doença , Surtos de Doenças/estatística & dados numéricos , Feminino , Genótipo , Humanos , Imunoglobulina M/sangue , Incidência , Masculino , Sarampo/epidemiologia , Filogenia , Gravidez , Vacina contra Rubéola/imunologia , Uganda/epidemiologia
16.
Rev Esp Quimioter ; 32(6): 525-531, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31642641

RESUMO

OBJECTIVE: The aims of this study are to determine the seroprevalence for measles, mumps, rubella, and varicella zoster virus (VZV) in a cohort of nursing students, to evaluate vaccination response rates of nonimmune students, and to calculate the cost of vaccinating students based on seroprevalence screening. METHODS: A cross-sectional study was conducted August 2015-November 2016 among 326 healthy nursing students aged 14.1-18.1 years. Serum IgG antibodies were measured by ELISA. Results were analyzed by the Chi-square test; a p-value of < 0.05 was considered statistically significant. RESULTS: The number of seropositive participants (%) was 308 (94.5%) for rubella, 295 (90.5%) for VZV, 244 (74.9%) for measles, and 219 (67.2%) for mumps. A significant correlation was found between measles IgG and age. A relationship was also observed between VZV IgG and kindergarten attendance. Response rates to measles, rubella, VZV, and mumps vaccination were 96%, 92.3%, 87.5%, 78.8%, respectively. The total cost of vaccination after IgG screening was less than vaccination without screening. CONCLUSIONS: In this study, participants' immunity to measles and VZV was low. Prevaccination serological screening was cost-effectiveness method for preventing measles, mumps, rubella, and varicella infections. We believe that administering booster measles, mumps, and rubella (MMR) vaccine doses or developing a special MMR vaccination strategy for at-risk groups may prevent MMR outbreaks.


Assuntos
Anticorpos Antivirais/sangue , Varicela/sangue , Varicela/epidemiologia , Herpesvirus Humano 3/imunologia , Imunoglobulina G/sangue , Vírus do Sarampo/imunologia , Sarampo/sangue , Sarampo/epidemiologia , Vírus da Caxumba/imunologia , Caxumba/sangue , Caxumba/epidemiologia , Vírus da Rubéola/imunologia , Rubéola (Sarampo Alemão)/sangue , Rubéola (Sarampo Alemão)/epidemiologia , Adolescente , Varicela/prevenção & controle , Vacina contra Varicela , Análise Custo-Benefício , Estudos Transversais , Feminino , Humanos , Imunogenicidade da Vacina , Masculino , Sarampo/prevenção & controle , Vacina contra Sarampo-Caxumba-Rubéola , Caxumba/prevenção & controle , Rubéola (Sarampo Alemão)/prevenção & controle , Estudos Soroepidemiológicos , Estudantes de Ciências da Saúde
17.
Emerg Infect Dis ; 25(6): 1101-1109, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31107215

RESUMO

We estimated the economic impact of concurrent measles and rubella outbreaks in Romania during 2011-2012. We collected costs from surveys of 428 case-patients and caretakers, government records, and health staff interviews. We then estimated financial and opportunity costs. During the study period, 12,427 measles cases and 24,627 rubella cases were recorded; 27 infants had congenital rubella syndrome (CRS). The cost of the outbreaks was US $9.9 million. Cost per case was US $439 for measles, US $132 for rubella, and US $44,051 for CRS. Up to 36% of households needed to borrow money to pay for illness treatment. Approximately 17% of patients continued to work while ill to pay their treatment expenses. Our key study findings were that households incurred a high economic burden compared with their incomes, the health sector bore most costs, and CRS costs were substantial and relevant to include in rubella outbreak cost studies.


Assuntos
Coinfecção , Efeitos Psicossociais da Doença , Surtos de Doenças , Sarampo/epidemiologia , Rubéola (Sarampo Alemão)/epidemiologia , Adolescente , Criança , Pré-Escolar , Custos e Análise de Custo , Feminino , Custos de Cuidados de Saúde , História do Século XXI , Humanos , Lactente , Recém-Nascido , Masculino , Sarampo/história , Sarampo/virologia , Vigilância em Saúde Pública , Romênia/epidemiologia , Rubéola (Sarampo Alemão)/história , Rubéola (Sarampo Alemão)/virologia , Síndrome da Rubéola Congênita/epidemiologia , Síndrome da Rubéola Congênita/virologia , Fatores Socioeconômicos
18.
Vaccine ; 37(38): 5754-5761, 2019 09 10.
Artigo em Inglês | MEDLINE | ID: mdl-30904317

RESUMO

The Measles & Rubella Initiative (M&RI) identified five key strategies to achieve measles and rubella elimination, including research and innovation to support cost-effective operations and improve vaccination and diagnostic tools. In 2016, the M&RI Research and Innovation Working Group (R&IWG) completed a research prioritization process to identify key research questions and update the global research agenda. The R&IWG reviewed meeting reports and strategic planning documents and solicited programmatic inputs from vaccination experts at the program operational level through a web survey, to identify previous research priorities and new research questions. The R&IWG then convened a meeting of experts to prioritize the identified research questions in four strategic areas: (1) epidemiology and economics, (2) surveillance and laboratory, (3) immunization strategies, and (4) demand creation and communications. The experts identified 19 priority research questions in the four strategic areas to address key areas of work necessary to further progress toward elimination. Future commitments from partners will be needed to develop a platform for improved coordination with adequate and predictable resources for research implementation and innovation to address these identified priorities.


Assuntos
Erradicação de Doenças , Invenções , Sarampo/epidemiologia , Sarampo/prevenção & controle , Pesquisa , Rubéola (Sarampo Alemão)/epidemiologia , Rubéola (Sarampo Alemão)/prevenção & controle , Surtos de Doenças , Economia , Necessidades e Demandas de Serviços de Saúde , Humanos , Imunização/métodos , Sarampo/transmissão , Sarampo/virologia , Testes Imediatos , Vigilância em Saúde Pública , Rubéola (Sarampo Alemão)/transmissão , Rubéola (Sarampo Alemão)/virologia , Vacinação/métodos
19.
J Obstet Gynaecol Can ; 40(12): 1646-1656, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30527073

RESUMO

OBJECTIVE: To review the epidemiology, natural history, evaluation, and prevention of rubella infection during pregnancy. This will aid obstetric care providers in counseling their patients regarding potentially devastating effects on the developing fetus and the importance of vaccinating susceptible women as appropriate. OUTCOMES: Outcomes evaluated include fetal rubella infection, maternal seroconversion and response to rubella-containing vaccines. EVIDENCE: Medline, PubMed, EMBASE, and Cochrane databases were searched for articles in English on subjects related to rubella infection during pregnancy betweenn 1985 and 2017. Results were restricted to systematic reviews, randomized controlled trials/controlled clinical trials, and observational studies. Other (unpublished) literature was identified through searching the websites of health technology assessment and health technology assessment-related agencies, clinical practice guideline collections, clinical trial registries, and national and international medical specialty societies. VALUATION METHODS: The quality of the evidence is rated using the criteria described in the Report of the Canadian Task Force on Preventive Health Care (Table 1). Recommendations for practice are ranked according to the method described in this Report. GUIDELINE UPDATE: The guideline will be reviewed 5 years after publication to decide if an update is required. However, if important new evidence is published prior to the 5-year cycle, the review process may be accelerated for a more rapid update of some recommendations SPONSOR: Society of Obstetricians and Gynaecologists of Canada.


Assuntos
Complicações Infecciosas na Gravidez/prevenção & controle , Rubéola (Sarampo Alemão)/prevenção & controle , Canadá/epidemiologia , Feminino , Ginecologia , Humanos , Obstetrícia , Gravidez , Complicações Infecciosas na Gravidez/epidemiologia , Rubéola (Sarampo Alemão)/epidemiologia , Sociedades Médicas
20.
Risk Anal ; 37(6): 1109-1131, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28561947

RESUMO

Policy makers responsible for managing measles and rubella immunization programs currently use a wide range of different vaccines formulations and immunization schedules. With endemic measles and rubella transmission interrupted in the region of the Americas, all five other regions of the World Health Organization (WHO) targeting the elimination of measles transmission by 2020, and increasing adoption of rubella vaccine globally, integrated dynamic disease, risk, decision, and economic models can help national, regional, and global health leaders manage measles and rubella population immunity. Despite hundreds of publications describing models for measles or rubella and decades of use of vaccines that contain both antigens (e.g., measles, mumps, and rubella vaccine or MMR), no transmission models for measles and rubella exist to support global policy analyses. We describe the development of a dynamic disease model for measles and rubella transmission, which we apply to 180 WHO member states and three other areas (Puerto Rico, Hong Kong, and Macao) representing >99.5% of the global population in 2013. The model accounts for seasonality, age-heterogeneous mixing, and the potential existence of preferentially mixing undervaccinated subpopulations, which create heterogeneity in immunization coverage that impacts transmission. Using our transmission model with the best available information about routine, supplemental, and outbreak response immunization, we characterize the complex transmission dynamics for measles and rubella historically to compare the results with available incidence and serological data. We show the results from several countries that represent diverse epidemiological situations to demonstrate the performance of the model. The model suggests relatively high measles and rubella control costs of approximately $3 billion annually for vaccination based on 2013 estimates, but still leads to approximately 17 million disability-adjusted life years lost with associated costs for treatment, home care, and productivity loss costs of approximately $4, $3, and $47 billion annually, respectively. Combined with vaccination and other financial cost estimates, our estimates imply that the eradication of measles and rubella could save at least $10 billion per year, even without considering the benefits of preventing lost productivity and potential savings from reductions in vaccination. The model should provide a useful tool for exploring the health and economic outcomes of prospective opportunities to manage measles and rubella. Improving the quality of data available to support decision making and modeling should represent a priority as countries work toward measles and rubella goals.


Assuntos
Vacina contra Sarampo/uso terapêutico , Sarampo/prevenção & controle , Sarampo/transmissão , Vacina contra Rubéola/uso terapêutico , Rubéola (Sarampo Alemão)/prevenção & controle , Rubéola (Sarampo Alemão)/transmissão , Adolescente , Adulto , Criança , Pré-Escolar , Simulação por Computador , Surtos de Doenças , Feminino , Saúde Global , Humanos , Programas de Imunização/métodos , Lactente , Recém-Nascido , Masculino , Sarampo/epidemiologia , Pessoa de Meia-Idade , Modelos Econômicos , Formulação de Políticas , Gravidez , Estudos Prospectivos , Anos de Vida Ajustados por Qualidade de Vida , Rubéola (Sarampo Alemão)/epidemiologia , Estados Unidos , Vacinação , Organização Mundial da Saúde , Adulto Jovem
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