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1.
Transfusion ; 2024 Jul 05.
Artículo en Inglés | MEDLINE | ID: mdl-38966907

RESUMEN

BACKGROUND: In December 2021, the U.S. Food and Drug Administration published a letter to clinical laboratory staff and healthcare providers detailing a risk of false Rapid Plasma Reagin (RPR) when using the Bio-Rad Laboratories BioPlex 2200 Syphilis Total & RPR kit in people who had received COVID-19 vaccination; Treponema pallidum particle agglutination assays did not appear to be impacted by this issue. We evaluated reactivity rates of syphilis screening with negative confirmatory testing at our institution by year and seasonality. METHODS: We performed a retrospective study of routine syphilis testing of whole blood (WB) collections at an academic hospital-based donor center in the eastern United States. All WB donations from 2011 to 2023 which demonstrated reactive syphilis screening (Beckman Coulter PK TP Microhemagglutination) with negative confirmatory testing (CAPTIA Syphilis (T. pallidum)-G) were evaluated. Reactivity rates by year and season of donation were compared using unpaired t-tests. RESULTS: A total of 109 WB donations from 86 unique donors who donated from 2011 to 2023 screened reactive for syphilis with negative confirmatory testing. The unconfirmed syphilis reactivity rate increased from 2018 to 2023 (mean: 0.360%) compared to 2011-2017 (mean: 0.071%, p < .05). An autumnal peak in unconfirmed reactives was observed. CONCLUSION: The unconfirmed syphilis reactivity rate among WB donors at our institution increased markedly since 2017 compared to the 7 years prior and doubled from 2020 to 2021. No testing assay changes explain these results. The autumnal peak in unconfirmed reactives suggests a possible environmental trigger such as viral infection or vaccination.

2.
Transfusion ; 64(5): 949-951, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38566573

RESUMEN

BACKGROUND: The U.S. Centers for Disease Control and Prevention (CDC) has reported increasing rates of alpha-gal syndrome, an allergic response after meat ingestion (AGS). AGS has been associated with prior exposure to tick bites or other biologics characterized by a life-threatening immunoglobulin E (IgE)-mediated hypersensitivity to galactose-alpha-1,3-galactose (alpha-gal) an oligosaccharide structurally similar to the group B antigen on red blood cells (RBC) found in most non-primate mammalian meat and products derived from these mammals. In 2023, Transfusion reported 3 group O recipients of group B plasma in the Washington, D.C. metropolitan area with no history of meat allergy who had anaphylactic transfusion reactions compatible with AGS. AIMS: We investigated allergic reactions in 2 additional patients who received ABO minor-incompatible blood products at 2 hospitals in the D.C. area during fall 2023. METHODS: For both patients, a medical chart review was performed and IgE levels to alpha-gal were measured. RESULTS: The first patient, a 64-year-old, O-positive patient status post heart transplant with no known allergies, was admitted with acute COVID-19 induced antibody-mediated transplant rejection and placed on extracorporeal membrane oxygenation (ECMO). While undergoing plasma exchange (PLEX) (50% albumin/50% fresh frozen plasma (FFP)), the patient tolerated 2 units of group O FFP and 1 unit of group A FFP before becoming hemodynamically unstable during transfusion of 1 unit of B-positive FFP. PLEX was stopped. The patient later died of sepsis from underlying causes. The second patient, a 57-year-old O-positive man with a history of melanoma and neuro fibromatosis type 1, was undergoing an abdominal resection including transfusion of 3 units of O-positive RBC when he suffered hypotension and ventricular tachycardia requiring intraoperative code after receiving 2 units of group B FFP. Hiveswere noted after resuscitation. The patient had a history of tick bites but no known allergies. He is alive 5 months after the possible allergic event. Both patients had full transfusion reaction evaluations and immunology testing results above the positive cutoff for anti-alpha-gal IgE. DISCUSSION AND CONCLUSION: Two patients with O-positive blood and no known allergies experience danaphyl axis after transfusion with group B FFP. The symptoms cannot definitively be imputed to an allergic transfusion reaction, but the presence of IgE against alpha-gal supports an association. Medicating patients with antihistamines and IV steroids pre-transfusion may prevent allergic reactions. Restricting group B plasma-containing products (plasma, platelets, cryoprecipitate) for patients who experience AGS-like symptoms may be considered.


Asunto(s)
Sistema del Grupo Sanguíneo ABO , COVID-19 , Enfermedad Crítica , Humanos , Persona de Mediana Edad , Masculino , Sistema del Grupo Sanguíneo ABO/inmunología , COVID-19/inmunología , COVID-19/sangre , Hipersensibilidad a los Alimentos/inmunología , Anafilaxia/etiología , Anafilaxia/sangre , Inmunoglobulina E/sangre , Femenino , Incompatibilidad de Grupos Sanguíneos/inmunología , Plasma/inmunología , SARS-CoV-2/inmunología
3.
Clin Infect Dis ; 75(Suppl 2): S264-S270, 2022 10 03.
Artículo en Inglés | MEDLINE | ID: mdl-35684974

RESUMEN

BACKGROUND: We assess if state-issued nonpharmaceutical interventions (NPIs) are associated with reduced rates of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection as measured through anti-nucleocapsid (anti-N) seroprevalence, a proxy for cumulative prior infection that distinguishes seropositivity from vaccination. METHODS: Monthly anti-N seroprevalence during 1 August 2020 to 30 March 2021 was estimated using a nationwide blood donor serosurvey. Using multivariable logistic regression models, we measured the association of seropositivity and state-issued, county-specific NPIs for mask mandates, gathering bans, and bar closures. RESULTS: Compared with individuals living in a county with all three NPIs in place, the odds of having anti-N antibodies were 2.2 (95% confidence interval [CI]: 2.0-2.3) times higher for people living in a county that did not have any of the 3 NPIs, 1.6 (95% CI: 1.5-1.7) times higher for people living in a county that only had a mask mandate and gathering ban policy, and 1.4 (95% CI: 1.3-1.5) times higher for people living in a county that had only a mask mandate. CONCLUSIONS: Consistent with studies assessing NPIs relative to COVID-19 incidence and mortality, the presence of NPIs were associated with lower SARS-CoV-2 seroprevalence indicating lower rates of cumulative infections. Multiple NPIs are likely more effective than single NPIs.


Asunto(s)
COVID-19 , SARS-CoV-2 , Anticuerpos Antivirales , COVID-19/epidemiología , COVID-19/prevención & control , Humanos , Estudios Seroepidemiológicos , Estados Unidos/epidemiología
4.
Transfusion ; 62(7): 1321-1333, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35607854

RESUMEN

BACKGROUND: A national serosurvey of U.S. blood donors conducted in partnership with the Centers for Disease Control and Prevention (CDC) was initiated to estimate the prevalence of SARS-CoV-2 infections and vaccinations. METHODS: Beginning in July 2020, the Nationwide Blood Donor Seroprevalence Study collaborated with multiple blood collection organizations, testing labs, and leadership from government partners to capture, test, and analyze approximately 150,000 blood donation specimens per month in a repeated, cross-sectional seroprevalence survey. RESULTS: A CDC website (https://covid.cdc.gov/covid-data-tracker/#nationwide-blood-donor-seroprevalence) provided stratified, population-level results to public health professionals and the general public. DISCUSSION: The study adapted operations as the pandemic evolved, changing specimen flow and testing algorithms, and collecting additional data elements in response to changing policies on universal blood donation screening and administration of SARS-CoV-2 spike-based vaccines. The national serosurvey demonstrated the utility of serosurveillance testing of residual blood donations and highlighted the role of the blood collection industry in public-private partnerships during a public health emergency.


Asunto(s)
COVID-19 , SARS-CoV-2 , Anticuerpos Antivirales , COVID-19/epidemiología , Estudios Transversales , Humanos , Pandemias , Estudios Seroepidemiológicos
5.
MMWR Morb Mortal Wkly Rep ; 71(44): 1412-1417, 2022 Nov 04.
Artículo en Inglés | MEDLINE | ID: mdl-36327164

RESUMEN

As of October 21, 2022, a total of 27,884 monkeypox cases (confirmed and probable) have been reported in the United States.§ Gay, bisexual, and other men who have sex with men have constituted a majority of cases, and persons with HIV infection and those from racial and ethnic minority groups have been disproportionately affected (1,2). During previous monkeypox outbreaks, severe manifestations of disease and poor outcomes have been reported among persons with HIV infection, particularly those with AIDS (3-5). This report summarizes findings from CDC clinical consultations provided for 57 patients aged ≥18 years who were hospitalized with severe manifestations of monkeypox¶ during August 10-October 10, 2022, and highlights three clinically representative cases. Overall, 47 (82%) patients had HIV infection, four (9%) of whom were receiving antiretroviral therapy (ART) before monkeypox diagnosis. Most patients were male (95%) and 68% were non-Hispanic Black (Black). Overall, 17 (30%) patients received intensive care unit (ICU)-level care, and 12 (21%) have died. As of this report, monkeypox was a cause of death or contributing factor in five of these deaths; six deaths remain under investigation to determine whether monkeypox was a causal or contributing factor; and in one death, monkeypox was not a cause or contributing factor.** Health care providers and public health professionals should be aware that severe morbidity and mortality associated with monkeypox have been observed during the current outbreak in the United States (6,7), particularly among highly immunocompromised persons. Providers should test all sexually active patients with suspected monkeypox for HIV at the time of monkeypox testing unless a patient is already known to have HIV infection. Providers should consider early commencement and extended duration of monkeypox-directed therapy†† in highly immunocompromised patients with suspected or laboratory-diagnosed monkeypox.§§ Engaging all persons with HIV in sustained care remains a critical public health priority.


Asunto(s)
Infecciones por VIH , Mpox , Minorías Sexuales y de Género , Estados Unidos/epidemiología , Humanos , Masculino , Adolescente , Adulto , Femenino , Infecciones por VIH/diagnóstico , Homosexualidad Masculina , Etnicidad , Vigilancia de la Población , Grupos Minoritarios , Mpox/epidemiología
6.
Transfusion ; 61(1): 322-328, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-33119913

RESUMEN

BACKGROUND: Checkpoint inhibitors enhance T-lymphocyte-mediated antitumor responses, resulting in increased survival for patients with neoplastic disease. However, a subset of patients receiving checkpoint inhibitor therapy may experience adverse complications that include the development of autoimmune conditions, such as thrombotic thrombocytopenic purpura (TTP). Given the potential etiologic differences of checkpoint inhibitor-related autoimmunity, TTP that develops in the presence of checkpoint inhibitors may be refractory to current treatment methods and therefore may require additional treatment and prognostic consideration. CASE REPORT: Herein, we describe the unique clinical course of a patient who was treated with the combined checkpoint inhibitors nivolumab and ipilimumab for Stage IV malignant melanoma, who subsequently developed TTP. Unlike many patients with TTP, this patient failed to develop a sustained response to therapeutic plasma exchange. Additional use of steroids, anti-CD20, and plasma cell-targeting therapy (bortezomib) also failed to substantially reverse thrombocytopenia in a sustainable fashion. During this time, her melanoma progressed, and she ultimately succumbed. CONCLUSION: This case illustrates not only that TTP may be a potential complication of checkpoint inhibitor therapy, but also that TTP developing in this setting may result in an unpredictable response to commonly employed TTP treatment modalities. Ultimately, checkpoint inhibitor-related TTP may require distinct management approaches and prognostic considerations.


Asunto(s)
Inhibidores de Puntos de Control Inmunológico/efectos adversos , Melanoma/tratamiento farmacológico , Púrpura Trombocitopénica Trombótica/inducido químicamente , Autoinmunidad/inmunología , Progresión de la Enfermedad , Resultado Fatal , Femenino , Humanos , Inmunoterapia/efectos adversos , Melanoma/clasificación , Persona de Mediana Edad , Estadificación de Neoplasias , Intercambio Plasmático/métodos , Púrpura Trombocitopénica Trombótica/inmunología , Púrpura Trombocitopénica Trombótica/terapia , Neoplasias Cutáneas/patología
7.
Transfusion ; 61(10): 2814-2824, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34510475

RESUMEN

In March 2020, there were no treatment options for COVID-19. Passive immune therapy including anti-SARS-CoV-2 hyperimmune globulin (hIVIG) was a logical candidate for COVID-19 therapeutic trials, given past success treating emerging pathogens with endogenous neutralizing antibodies. We established a plasma collection protocol for persons recovered from COVID-19. To speed recruitment in the first U.S. hotspot, Seattle, Washington, federal and state public health agencies collaborated with Bloodworks Northwest to collect convalescent plasma (CP) for manufacturing hIVIG. During March-December 2020, we identified and recruited prospective CP donors via letters to persons recovered from COVID-19 with laboratory-confirmed SARS-CoV-2 infection. Prospective donors were pre-screened and administered a medical history survey. Anti-SARS-CoV-2 neutralizing antibody (NAb) titers were classified as qualifying (≥1:80) or non-qualifying (<1:80) for enrollment based on a live virus neutralization assay. Generalized estimating equations were used to identify characteristics of donors associated with qualifying versus nonqualifying NAb titers. Overall, 21,359 letters resulted in 3207 inquiries, 2159 prescreenings with laboratory-confirmed SARS-CoV-2 infection, and 573 donors (27% of all pre-screenings with confirmed infection) who provided a screening plasma donation. Of 573 donors screened, 254 (44%) provided plasma with qualifying NAb titers, resulting in 1284 units for hIVIG manufacture. In a multivariable model, after adjusting for other factors, time (60 days) from COVID-19 symptom onset to screening was associated with lower odds of qualifying NAb (adjusted odds ratio = 0.67, 95% CI: 0.48-0.94). The collaboration facilitated a rapid response to develop and provide hIVIG for clinical trials and CP for transfusion. Only 1 in 12 donor inquiries resulted in a qualifying plasma donation. Challenges included recruitment and the relatively low percentage of persons with high NAb titers and limited screening capacity. This resource-intensive collaboration may not be scalable but informs preparedness and response strategies for plasma collection in future epidemics. Operational readiness plans with templates for screening, consent, and data collection forms are recommended.


Asunto(s)
Recolección de Muestras de Sangre , COVID-19/terapia , Salud Pública , Asociación entre el Sector Público-Privado , SARS-CoV-2 , Adulto , Anciano , Anciano de 80 o más Años , Urgencias Médicas , Femenino , Humanos , Inmunización Pasiva , Masculino , Persona de Mediana Edad , Adulto Joven , Sueroterapia para COVID-19
8.
MMWR Morb Mortal Wkly Rep ; 70(4): 109-113, 2021 Jan 29.
Artículo en Inglés | MEDLINE | ID: mdl-33507893

RESUMEN

On March 19, 2020, the governor of California issued a statewide stay-at-home order to contain the spread of SARS-CoV-2, the virus that causes coronavirus disease 2019 (COVID-19).* The order reduced accessibility to and patient attendance at outpatient medical visits,† including preventive services such as cervical cancer screening. In-person clinic visits increased when California reopened essential businesses on June 12, 2020.§ Electronic medical records of approximately 1.5 million women served by Kaiser Permanente Southern California (KPSC), a large integrated health care system, were examined to assess cervical cancer screening rates before, during, and after the stay-at-home order. KPSC policy is to screen women aged 21-29 years every 3 years with cervical cytology alone (Papanicolaou [Pap] test); those aged 30-65 years were screened every 5 years with human papillomavirus (HPV) testing and cytology (cotesting) through July 15, 2020, and after July 15, 2020, with HPV testing alone, consistent with the latest recommendations from U.S. Preventive Services Task Force.¶ Compared with the 2019 baseline, cervical cancer screening rates decreased substantially during the stay-at-home order. Among women aged 21-29 years, cervical cytology screening rates per 100 person-months declined 78%. Among women aged 30-65 years, HPV test screening rates per 100 person-months decreased 82%. After the stay-at-home order was lifted, screening rates returned to near baseline, which might have been aided by aspects of KPSC's integrated, organized screening program (e.g., reminder systems and tracking persons lost to follow-up). As the pandemic continues, groups at higher risk for developing cervical cancers and precancers should be evaluated first. Ensuring that women receive preventive services, including cancer screening and appropriate follow-up in a safe and timely manner, remains important.


Asunto(s)
COVID-19/prevención & control , Prestación Integrada de Atención de Salud , Detección Precoz del Cáncer/estadística & datos numéricos , Cuarentena/legislación & jurisprudencia , Neoplasias del Cuello Uterino/prevención & control , Adulto , Anciano , COVID-19/epidemiología , California/epidemiología , Femenino , Humanos , Persona de Mediana Edad , Adulto Joven
9.
JAMA ; 326(14): 1400-1409, 2021 10 12.
Artículo en Inglés | MEDLINE | ID: mdl-34473201

RESUMEN

Importance: People who have been infected with or vaccinated against SARS-CoV-2 have reduced risk of subsequent infection, but the proportion of people in the US with SARS-CoV-2 antibodies from infection or vaccination is uncertain. Objective: To estimate trends in SARS-CoV-2 seroprevalence related to infection and vaccination in the US population. Design, Setting, and Participants: In a repeated cross-sectional study conducted each month during July 2020 through May 2021, 17 blood collection organizations with blood donations from all 50 US states; Washington, DC; and Puerto Rico were organized into 66 study-specific regions, representing a catchment of 74% of the US population. For each study region, specimens from a median of approximately 2000 blood donors were selected and tested each month; a total of 1 594 363 specimens were initially selected and tested. The final date of blood donation collection was May 31, 2021. Exposure: Calendar time. Main Outcomes and Measures: Proportion of persons with detectable SARS-CoV-2 spike and nucleocapsid antibodies. Seroprevalence was weighted for demographic differences between the blood donor sample and general population. Infection-induced seroprevalence was defined as the prevalence of the population with both spike and nucleocapsid antibodies. Combined infection- and vaccination-induced seroprevalence was defined as the prevalence of the population with spike antibodies. The seroprevalence estimates were compared with cumulative COVID-19 case report incidence rates. Results: Among 1 443 519 specimens included, 733 052 (50.8%) were from women, 174 842 (12.1%) were from persons aged 16 to 29 years, 292 258 (20.2%) were from persons aged 65 years and older, 36 654 (2.5%) were from non-Hispanic Black persons, and 88 773 (6.1%) were from Hispanic persons. The overall infection-induced SARS-CoV-2 seroprevalence estimate increased from 3.5% (95% CI, 3.2%-3.8%) in July 2020 to 20.2% (95% CI, 19.9%-20.6%) in May 2021; the combined infection- and vaccination-induced seroprevalence estimate in May 2021 was 83.3% (95% CI, 82.9%-83.7%). By May 2021, 2.1 SARS-CoV-2 infections (95% CI, 2.0-2.1) per reported COVID-19 case were estimated to have occurred. Conclusions and Relevance: Based on a sample of blood donations in the US from July 2020 through May 2021, vaccine- and infection-induced SARS-CoV-2 seroprevalence increased over time and varied by age, race and ethnicity, and geographic region. Despite weighting to adjust for demographic differences, these findings from a national sample of blood donors may not be representative of the entire US population.


Asunto(s)
Anticuerpos Antivirales/sangre , Donantes de Sangre , Vacunas contra la COVID-19 , COVID-19/epidemiología , SARS-CoV-2/inmunología , Adolescente , Adulto , Factores de Edad , Anciano , COVID-19/etnología , Prueba Serológica para COVID-19 , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Seroepidemiológicos , Estados Unidos/epidemiología , Adulto Joven
10.
Transfusion ; 60(7): 1536-1543, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32588918

RESUMEN

BACKGROUND: The PLASMIC score is a rapid and inexpensive tool for predicting severe ADAMTS13 deficiency (activity <10%) in patients with suspected thrombotic thrombocytopenic purpura (TTP) by analyzing seven parameters (platelet count; combined hemolysis variable; absence of active neoplasia; absence of an organ or stem-cell transplant; mean corpuscular value; international normalized ratio; and serum creatinine). The purpose of this study was to validate the PLASMIC score at a large multi-institutional academic medical center. METHODS: An internal database of consultations to the transfusion medicine service, which oversees therapeutic apheresis at our institution, was reviewed to identify patients who were evaluated for and/or received plasma exchange for suspected TTP. These consultations covered the time period of January 2012 to February 2019. PLASMIC scoring criteria and ADAMTS13 assay results were abstracted from the electronic medical record, the PLASMIC score was calculated, and cases stratified into risk categories (low, intermediate, high risk) based on the score value. RESULTS: Of 58 patients identified, 46 met inclusion criteria, and 27 demonstrated ADAMTS13 activity <10%. Correlation of severe ADAMTS13 deficiency with risk-stratified groups resulted in 78% sensitivity, 63% specificity, 75% positive predictive value (PPV), and 67% negative predictive value (NPV). DISCUSSION: These findings paralleled those from validation studies performed at other institutions. They provided insufficient evidence to recommend routine use of the PLASMIC score to rule out TTP among patients at our hospitals. Nonetheless, these results reinforce the importance of early ADAMTS13 testing as a diagnostic triage tool for patients with suspected TTP.


Asunto(s)
Proteína ADAMTS13/sangre , Centros Médicos Académicos , Bases de Datos Factuales , Registros Electrónicos de Salud , Intercambio Plasmático , Púrpura Trombocitopénica Trombótica , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Recuento de Plaquetas , Púrpura Trombocitopénica Trombótica/sangre , Púrpura Trombocitopénica Trombótica/terapia , Estudios Retrospectivos
11.
JAMA ; 329(20): 1719-1721, 2023 05 23.
Artículo en Inglés | MEDLINE | ID: mdl-37126319

RESUMEN

This Arts and Medicine feature reviews The Mould That Changed the World, a musical about the history of penicillin that uses fringe set design, eccentric staging, and quirky lyrics to teach audiences the importance of antimicrobial stewardship.


Asunto(s)
Programas de Optimización del Uso de los Antimicrobianos , Música , Penicilinas , Penicilinas/uso terapéutico
12.
Bull World Health Organ ; 95(1): 62-68, 2017 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-28053365

RESUMEN

Economically and politically disruptive disease outbreaks are a hallmark of the 21st century. Although pandemics are driven by human behaviours, current surveillance systems for identifying pandemic threats are largely reliant on the monitoring of disease outcomes in clinical settings. Standardized integrated biological-behavioural surveillance could, and should, be used in community settings to complement such clinical monitoring. The usefulness of such an approach has already been demonstrated in studies on human immunodeficiency virus, where integrated surveillance contributed to a biologically based and quantifiable understanding of the behavioural risk factors associated with the transmission dynamics of the virus. When designed according to Strengthening the Reporting of Observational Studies in Epidemiology criteria, integrated surveillance requires that both behavioural risk factors - i.e. exposure variables - and disease-indicator outcome variables be measured in behavioural surveys. In the field of pandemic threats, biological outcome data could address the weaknesses of self-reported data collected in behavioural surveys. Data from serosurveys of viruses with pandemic potential, collected under non-outbreak conditions, indicate that serosurveillance could be used to predict future outbreaks. When conducted together, behavioural surveys and serosurveys could warn of future pandemics, potentially before the disease appears in clinical settings. Traditional disease-outcome surveillance must be frequent and ongoing to remain useful but behavioural surveillance remains informative even if conducted much less often, since behaviour change occurs slowly over time. Only through knowledge of specific behavioural risk factors can interventions and policies that can prevent the next pandemic be developed.


Les épidémies de maladies venant perturber la vie économique et politique sont une caractéristique du XXIe siècle.Bien que les pandémies soient véhiculées par les comportements humains, les systèmes de surveillance qui permettent actuellement de détecter les menaces pandémiques s'appuient essentiellement sur le suivi des maladies en milieu clinique.Une surveillance biologico-comportementale intégrée et standardisée pourrait et devrait être appliquée dans les communautés, en complément de ce suivi clinique.L'utilité de ce type d'approche a déjà été démontrée dans des études sur le virus de l'immunodéficience humaine, où la surveillance intégrée a permis de comprendre et de quantifier, sur la base d'éléments biologiques, les facteurs de risque comportementaux associés à la dynamique de transmission du virus. En application des critères STROBE (Strengthening the Reporting of Observational Studies in Epidemiology), la surveillance intégrée exige que soient mesurés à la fois les facteurs de risque comportementaux - à savoir les variables d'exposition - et les variables d'indicateurs de la maladie lors d'enquêtes comportementales. Dans le domaine des menaces pandémiques, les données biologiques pourraient compenser les faiblesses des données recueillies lors des enquêtes comportementales.Les données issues d'enquêtes sérologiques sur des virus susceptibles de causer des pandémies, recueillies hors épidémie, indiquent que la surveillance sérologique pourrait être utilisée pour prédire les futures épidémies. Réalisées conjointement, les enquêtes comportementales et les enquêtes sérologiques pourraient avertir des futures pandémies, potentiellement avant que les maladies n'apparaissent en milieu clinique. La surveillance traditionnelle des maladies doit être fréquente et continue pour rester utile, mais la surveillance comportementale reste informative même si elle est effectuée moins souvent, car les changements de comportement s'effectuent beaucoup plus lentement. Les interventions et les politiques pouvant empêcher une prochaine pandémie ne peuvent être élaborées qu'en connaissant spécifiquement les facteurs de risque comportementaux.


Los brotes de enfermedades perjudiciales para la economía y la política son una característica del siglo XXI. A pesar de que las pandemias se ven impulsadas por el comportamiento humano, los sistemas de vigilancia actuales para identificar amenazas de pandemia dependen enormemente del seguimiento de los resultados de las enfermedades en entornos clínicos. La vigilancia integrada y normalizada de datos biológicos y del comportamiento podría y debería utilizarse en comunidades como complemento de dicho seguimiento clínico. Su utilidad ya se ha demostrado en varios estudios sobre el virus de la inmunodeficiencia humana, en los que la vigilancia integrada contribuyó a la comprensión cuantificable y biológica de los factores de riesgo del comportamiento asociados con la dinámica de la transmisión del virus. Al estar diseñada según los criterios del Fortalecimiento de la Notificación de los Estudios Observacionales en Epidemiología, la vigilancia integrada requiere tanto los factores de riesgo del comportamiento (es decir, las variables de exposición) como las variables de resultados del indicador de enfermedades se midan en encuestas sobre el comportamiento. En el campo de las amenazas de pandemia, los datos de los resultados biológicos podrían abordar la debilidad de los datos autodeclarados recopilados en las encuestas sobre el comportamiento. La información de las encuestas serológicas sobre virus con potencial pandémico, recopilada en condiciones en las que no se había reportado un brote, indica que podría utilizarse la vigilancia serológica para predecir futuros brotes. Al realizarse juntas, las encuestas serológicas y sobre el comportamiento podrían advertir sobre futuras pandemias, probablemente antes de que la enfermedad aparezca en entornos clínicos. La vigilancia tradicional de los resultados de las enfermedades debe ser constante y frecuente para que sea útil, aunque la vigilancia sobre el comportamiento sigue siendo meramente informativa, incluso si se realiza con menos asiduidad, dado que los cambios de comportamiento se producen lentamente con el paso del tiempo. Únicamente a través del conocimiento de los factores de riesgo del comportamiento específicos se pueden desarrollar las intervenciones y las políticas capaces de evitar el desarrollo de la próxima pandemia.


Asunto(s)
Enfermedades Transmisibles Emergentes/epidemiología , Enfermedades Transmisibles Emergentes/transmisión , Conductas de Riesgo para la Salud , Pandemias , Vigilancia de la Población/métodos , Animales , Enfermedades Transmisibles Emergentes/prevención & control , Humanos , Gestión de Riesgos , Pruebas Serológicas , Zoonosis/epidemiología , Zoonosis/prevención & control , Zoonosis/transmisión
13.
Euro Surveill ; 22(11)2017 Mar 16.
Artículo en Inglés | MEDLINE | ID: mdl-28333616

RESUMEN

A cross-sectional study was conducted in Egypt to determine the prevalence of Middle East respiratory syndrome coronavirus (MERS-CoV) in imported and resident camels and bats, as well as to assess possible transmission of the virus to domestic ruminants and equines. A total of 1,031 sera, 1,078 nasal swabs, 13 rectal swabs, and 38 milk samples were collected from 1,078 camels in different types of sites. In addition, 145 domestic animals and 109 bats were sampled. Overall, of 1,031 serologically-tested camels, 871 (84.5%) had MERS-CoV neutralising antibodies. Seroprevalence was significantly higher in imported (614/692; 88.7%) than resident camels (257/339; 5.8%) (p < 0.05). Camels from Sudan (543/594; 91.4%) had a higher seroprevalence than those from East Africa (71/98; 72.4%) (p < 0.05). Sampling site and age were also associated with MERS-CoV seroprevalence (p < 0.05). All tested samples from domestic animals and bats were negative for MERS-CoV antibodies except one sheep sample which showed a 1:640 titre. Of 1,078 camels, 41 (3.8%) were positive for MERS-CoV genetic material. Sequences obtained were not found to cluster with clade A or B MERS-CoV sequences and were genetically diverse. The presence of neutralising antibodies in one sheep apparently in contact with seropositive camels calls for further studies on domestic animals in contact with camels.


Asunto(s)
Anticuerpos Neutralizantes/sangre , Anticuerpos Antivirales/sangre , Camelus/virología , Infecciones por Coronavirus/epidemiología , Infecciones por Coronavirus/veterinaria , Infecciones por Coronavirus/virología , Coronavirus/aislamiento & purificación , Brotes de Enfermedades/veterinaria , Reservorios de Enfermedades/virología , Zoonosis/diagnóstico , Animales , Secuencia de Bases , Bovinos/sangre , Coronavirus/genética , Infecciones por Coronavirus/diagnóstico , Estudios Transversales , Egipto/epidemiología , Genotipo , Cabras/sangre , Inmunoglobulina G/sangre , Coronavirus del Síndrome Respiratorio de Oriente Medio/clasificación , Coronavirus del Síndrome Respiratorio de Oriente Medio/genética , Datos de Secuencia Molecular , Prevalencia , ARN Viral/análisis , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Análisis de Secuencia de ARN , Estudios Seroepidemiológicos , Ovinos/sangre , Zoonosis/epidemiología , Zoonosis/virología
16.
17.
JAMA ; 322(19): 1846-1847, 2019 Nov 19.
Artículo en Inglés | MEDLINE | ID: mdl-31657835
18.
Urology ; 2024 Jun 25.
Artículo en Inglés | MEDLINE | ID: mdl-38936628

RESUMEN

OBJECTIVE: To examine population-level scrotal cancer incidence rates and trends among adult men in the United States. METHODS: Data from the United States Cancer Statistics, covering approximately 96% of the United States population, were analyzed to calculate age-standardized incidence rates of scrotal cancer among men aged 18 years and older from 1999 to 2020. Trends in incidence rates were evaluated by age, race and ethnicity, Census region, and histology using joinpoint regression. RESULTS: Overall, 4,669 men were diagnosed with scrotal cancer (0.20 per 100,000). Incidence rates were highest among men aged 70 years and older (0.82 per 100,000). Rates were higher among non-Hispanic Asian or Pacific Islander men (0.31 per 100,000) compared to other race and ethnicity groups. The most common histologic subtypes were squamous cell carcinoma (35.9%), extramammary Paget disease (20.8%), and sarcoma (20.5%). Incidence rates decreased by 2.9% per year from 1999 to 2019 for non-Hispanic Asian or Pacific Islander men, decreased by 8.1% per year from 1999 to 2006 for basal cell carcinomas, and increased by 1.8% per year from 1999 to 2019 for extramammary Paget disease; otherwise, rates remained stable for all other variables examined. CONCLUSION: While scrotal cancer incidence rates were higher than previously reported, rates were still low and stable over time.

19.
Front Immunol ; 14: 1207638, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37465681

RESUMEN

We present a case report of a 63-year-old female health care worker who is 15 years status post double lung transplant and six years status post living related donor kidney transplant who is healthy on a chronic immunosuppression regimen including prednisone, mycophenolate, and tacrolimus who received the SARS-CoV-2 mRNA vaccine (Pfizer-BioNTech BNT162b2) primary series and had poor initial humoral response to the COVID-19 mRNA vaccine, then demonstrated a robust, sustained immune response against S1 and S2 antigens for over seven months after receiving the recommended vaccine doses, including booster dose, without developing COVID-19 or other serious adverse events. Her immune response to vaccination indicates effective formation of anti-spike T cell memory despite chronic immunosuppression. This case report provides a comprehensive characterization of her immune response to this SARS-CoV-2 vaccination series. As vaccine effectiveness data is updated, and as better understanding of immune response including hybrid immunity emerges, these findings may reassure that recipients of SOTs may be capable of durable immune responses to emerging variants of SARS-CoV-2.


Asunto(s)
Vacunas contra la COVID-19 , COVID-19 , Trasplante de Riñón , Femenino , Humanos , Persona de Mediana Edad , Vacuna BNT162 , COVID-19/prevención & control , Vacunas contra la COVID-19/administración & dosificación , Trasplante de Riñón/efectos adversos , Cinética , Pulmón , SARS-CoV-2
20.
Disabil Health J ; 16(2): 101436, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36740547

RESUMEN

BACKGROUND: Adults with disabilities are at increased risk for SARS-CoV-2 infection and severe disease; whether adults with disabilities are at an increased risk for ongoing symptoms after acute SARS-CoV-2 infection is unknown. OBJECTIVES: To estimate the frequency and duration of long-term symptoms (>4 weeks) and health care utilization among adults with and without disabilities who self-report positive or negative SARS-CoV-2 test results. METHODS: Data from a nationwide survey of 4510 U.S. adults administered from September 24, 2021-October 7, 2021, were analyzed for 3251 (79%) participants who self-reported disability status, symptom(s), and SARS-CoV-2 test results (a positive test or only negative tests). Multivariable models were used to estimate the odds of having ≥1 COVID-19-like symptom(s) lasting >4 weeks by test result and disability status, weighted and adjusted for socio-demographics. RESULTS: Respondents who tested positive for SARS-CoV-2 had higher odds of reporting ≥1 long-term symptom (with disability: aOR = 4.50 [95% CI: 2.37, 8.54] and without disability: aOR = 9.88 [95% CI: 7.13, 13.71]) compared to respondents testing negative. Among respondents who tested positive, those with disabilities were not significantly more likely to experience long-term symptoms compared to respondents without disabilities (aOR = 1.65 [95% CI: 0.78, 3.50]). Health care utilization for reported symptoms was higher among respondents with disabilities who tested positive (40%) than among respondents without disabilities who tested positive (18%). CONCLUSIONS: Ongoing symptoms among adults with and without disabilities who also test positive for SARS-CoV-2 are common; however, the frequency of health care utilization for ongoing symptoms is two-fold among adults with disabilities.


Asunto(s)
COVID-19 , Personas con Discapacidad , Adulto , Humanos , SARS-CoV-2 , Síndrome Post Agudo de COVID-19 , Encuestas y Cuestionarios , Aceptación de la Atención de Salud
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