Hospital-Wide SARS-CoV-2 seroprevalence in health care workers in a Spanish teaching hospital.

INTRODUCTION: Hospital-wide SARS-CoV-2 seroprevalence is rarely explored and can identify areas of unexpected risk. We determined the seroprevalence against SARS-CoV-2 in all health care workers (HCW) at a hospital. METHODS: Cross-sectional study (14-27/04/2020). We determined SARS-CoV-2 IgG by ELISA in all HCW including external workers of a teaching hospital in Madrid. They were classified by professional category, working area, and risk for SARS-CoV-2 exposure. RESULTS: Among 2919 HCW, 2590 (88,7%) were evaluated. The mean age was 43.8 years (SD 11.1), and 73.9% were females. Globally, 818 (31.6%) workers were IgG positive with no differences for age, sex or previous diseases. Of these, 48.5% did not report previous symptoms. Seropositivity was more frequent in high- (33.1%) and medium- (33.8%) than in low-risk areas (25.8%, p=0.007), but not for hospitalization areas attending COVID-19 and non-COVID-19 patients (35.5 vs 38.3% p>0.05). HWC with a previous SARS-CoV2 PCR-positive test were IgG seropositive in 90.8%. By multivariate logistic regression analysis seropositivity was significantly associated with being physicians (OR 2.37, CI95% 1.61-3.49), nurses (OR 1.67, CI95% 1.14-2.46), nurse assistants (OR 1.84, CI95% 1.24-2.73), HCW working at COVID-19 hospitalization areas (OR 1.71, CI95% 1.22-2.40), non-COVID-19 hospitalization areas (OR 1.88, CI95% 1.30-2.73), and at the Emergency Room (OR 1.51, CI95% 1.01-2.27). CONCLUSIONS: Seroprevalence uncovered a high rate of infection previously unnoticed among HCW. Patients not suspected of having COVID-19 as well as asymptomatic HCW may be a relevant source for nosocomial SARS-CoV-2 transmission.

Hospital-Wide SARS-CoV-2 seroprevalence in health care workers in a Spanish teaching hospital / Seroprevalencia frente a SARS-CoV-2 en 2.590 trabajadores de un hospital universitario español

Introduction: Hospital-wide SARS-CoV-2 seroprevalence is rarely explored and can identify areas of unexpected risk. We determined the seroprevalence against SARS-CoV-2 in all health care workers (HCW) at a hospital. Methods: Cross-sectional study (14-27/04/2020). We determined SARS-CoV-2 IgG by ELISA in all HCW including external workers of a teaching hospital in Madrid. They were classified by professional category, working area, and risk for SARS-CoV-2 exposure. Results: Among 2919 HCW, 2590 (88,7%) were evaluated. The mean age was 43.8 years (SD 11.1), and 73.9% were females. Globally, 818 (31.6%) workers were IgG positive with no differences for age, sex or previous diseases. Of these, 48.5% did not report previous symptoms. Seropositivity was more frequent in high- (33.1%) and medium- (33.8%) than in low-risk areas (25.8%, p=0.007), but not for hospitalization areas attending COVID-19 and non-COVID-19 patients (35.5 vs 38.3% p>0.05). HWC with a previous SARS-CoV2 PCR-positive test were IgG seropositive in 90.8%. By multivariate logistic regression analysis seropositivity was significantly associated with being physicians (OR 2.37, CI95% 1.61–3.49), nurses (OR 1.67, CI95% 1.14–2.46), nurse assistants (OR 1.84, CI95% 1.24–2.73), HCW working at COVID-19 hospitalization areas (OR 1.71, CI95% 1.22–2.40), non-COVID-19 hospitalization areas (OR 1.88, CI95% 1.30–2.73), and at the Emergency Room (OR 1.51, CI95% 1.01–2.27). Conclusions: Seroprevalence uncovered a high rate of infection previously unnoticed among HCW. Patients not suspected of having COVID-19 as well as asymptomatic HCW may be a relevant source for nosocomial SARS-CoV-2 transmission.(AU)

Introducción: Los estudios de seroprevalencia frente a SARS-CoV-2 en los trabajadores sanitarios (TS) permiten identificar áreas de riesgo inesperado en los hospitales. Métodos: Estudio transversal (14-27/04/2020). Se determinó IgG frente a SARS-CoV-2 mediante ELISA en todos los TS, incluidos los externos, de un hospital universitario de Madrid. Se clasificaron por categoría profesional, área de trabajo y riesgo de exposición al SARS-CoV-2. Resultados: Entre 2.919 TS, se evaluaron 2.590 (88,7%); edad media 43,8años (DE11,1) y 73,9% mujeres. Globalmente, 818 (31,6%) trabajadores tuvieron IgG positiva, sin diferencias por edad, sexo o enfermedades previas. De estos, el 48,5% no comunicaron síntomas previos. La seropositividad fue más frecuente en las áreas de alto (33,1%) y medio (33,8%) que en las de bajo riesgo (25,8%, p=0,007), pero similar en las áreas de hospitalización que atendían a pacientes con y sin COVID-19 (35,5 vs 38,3%, p>0,05). El 90,8% de los TS con PCR previa positiva frente a SARS-CoV-2 tuvieron IgG positiva. Por análisis multivariante, la seropositividad se asoció con ser médico (OR2,37, IC95%: 1,61-3,49), enfermero (OR1,67, IC95%: 1,14-2,46), auxiliar de enfermería (OR1,84, IC95%: 1,24-2,73), trabajar en áreas de hospitalización COVID-19 (OR1,71, IC95%: 1,22-2,40) y no COVID-19 (OR1,88, IC95%: 1,30-2,73) y en Urgencias (OR1,51, IC95%: 1,01-2,27). Conclusiones: El estudio de seroprevalencia desveló una alta tasa de infección que pasó desapercibida entre los trabajadores sanitarios. Los pacientes sin sospecha clínica de COVID-19 y los trabajadores sanitarios asintomáticos pueden ser una fuente importante de transmisión nosocomial del SARS-CoV-2.(AU)

Impact of Previous Coronavirus Disease 2019 on Immune Response After a Single Dose of BNT162b2 Severe Acute Respiratory Syndrome Coronavirus 2 Vaccine.

Immune response after a single dose of BNT162b2 vaccine was markedly increased in subjects with previous severe acute respiratory syndrome coronavirus 2 infection, reaching similar immunoglobulin titers to those elicited by the full 2 doses in naive cases, and increased modestly after the second dose. These data may inform the priority of the boosting dose.

SARS-CoV-2 new infections among health-care workers after the first dose of the BNT162b2 mRNA COVID-19 vaccine. A hospital-wide cohort study.

OBJECTIVES: To evaluate the effect of mRNA severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination on the incidence of new SARS-CoV-2 infections in health-care workers (HCW). METHODS: The evolution of the incident rate of microbiologically confirmed SARS-CoV-2 infection in a cohort of 2590 HCW after BNT162b2 mRNA SARS-CoV-2 vaccination, compared with the rate in the community (n = 170 513) was evaluated by mixed Poisson regression models. RESULTS: A total of 1820 HCW (70.3% of total) received the first dose of the BNT162b2 mRNA vaccine between 10 January and 16 January 2021, and 296 (11.4%) received it the following week. All of them completed vaccination 3 weeks later. Incidence rates of SARS-CoV-2 infection after the first dose of mRNA SARS-CoV-2 vaccine declined by 71% (Incidence Rate Ratio (IRR) 0.286, 95% CI 0.174-0.468; p < 0.001) and by 97% (IRR 0.03, 95% CI 0.013-0.068; p < 0.001) after the second dose, compared with the perivaccine time. SARS-CoV-2 incidence rates in the community (with a negligible vaccination rate) had a much lower decline: 2% (IRR 0.984, 95% CI 0.943-1.028; p 0.47) and 61% (IRR 0.390, 95% CI 0.375-0.406; p < 0.001) for equivalent periods. Adjusting for the decline in the community, the reduction in the incident rates among HCW were 73% (IRR 0.272, 95% CI 0.164-0.451 p < 0.001) after the first dose of the vaccine and 92% (IRR 0.176, 95% CI 0.033-0.174; p < 0.001) after the second dose. CONCLUSIONS: mRNA SARS-CoV-2 vaccination is associated with a dramatic decline in new SARS-CoV-2 infection among HCW, even before the administration of the second dose of the vaccine.

Hospital-Wide SARS-CoV-2 seroprevalence in health care workers in a Spanish teaching hospital / Seroprevalencia frente a SARS-CoV-2 en 2.590 trabajadores de un hospital universitario español

INTRODUCTION: Hospital-wide SARS-CoV-2 seroprevalence is rarely explored and can identify areas of unexpected risk. We determined the seroprevalence against SARS-CoV-2 in all health care workers (HCW) at a hospital. METHODS: Cross-sectional study (14-27/04/2020). We determined SARS-CoV-2 IgG by ELISA in all HCW including external workers of a teaching hospital in Madrid. They were classified by professional category, working area, and risk for SARS-CoV-2 exposure. RESULTS: Among 2919 HCW, 2590 (88,7%) were evaluated. The mean age was 43.8 years (SD 11.1), and 73.9% were females. Globally, 818 (31.6%) workers were IgG positive with no differences for age, sex or previous diseases. Of these, 48.5% did not report previous symptoms. Seropositivity was more frequent in high- (33.1%) and medium- (33.8%) than in low-risk areas (25.8%, p = 0.007), but not for hospitalization areas attending COVID-19 and non-COVID-19 patients (35.5 vs 38.3% p > 0.05). HWC with a previous SARS-CoV2 PCR-positive test were IgG seropositive in 90.8%. By multivariate logistic regression analysis seropositivity was significantly associated with being physicians (OR 2.37, C I95% 1.61-3.49), nurses (OR 1.67, CI 95% 1.14-2.46), nurse assistants (OR 1.84, CI 95% 1.24-2.73), HCW working at COVID-19 hospitalization areas (OR 1.71, CI 95% 1.22-2.40), non-COVID-19 hospitalization areas (OR 1.88, CI 95% 1.30-2.73), and at the Emergency Room (OR 1.51, CI 95% 1.01-2.27). CONCLUSIONS: Seroprevalence uncovered a high rate of infection previously unnoticed among HCW. Patients not suspected of having COVID-19 as well as asymptomatic HCW may be a relevant source for nosocomial SARS-CoV-2 transmission

INTRODUCCIÓN: Los estudios de seroprevalencia frente a SARS-CoV-2 en los trabajadores sanitarios (TS) permiten identificar áreas de riesgo inesperado en los hospitales. MÉTODOS: Estudio transversal (14-27/04/2020). Se determinó IgG frente a SARS-CoV-2 mediante ELISA en todos los TS, incluidos los externos, de un hospital universitario de Madrid. Se clasificaron por categoría profesional, área de trabajo y riesgo de exposición al SARS-CoV-2. RESULTADOS: Entre 2.919 TS, se evaluaron 2.590 (88,7%); edad media 43,8 años (DE 11,1) y 73,9% mujeres. Globalmente, 818 (31,6%) trabajadores tuvieron IgG positiva, sin diferencias por edad, sexo o enfermedades previas. De estos, el 48,5% no comunicaron síntomas previos. La seropositividad fue más frecuente en las áreas de alto (33,1%) y medio (33,8%) que en las de bajo riesgo (25,8%, p = 0,007), pero similar en las áreas de hospitalización que atendían a pacientes con y sin COVID-19 (35,5 vs 38,3%, p > 0,05). El 90,8% de los TS con PCR previa positiva frente a SARS-CoV-2 tuvieron IgG positiva. Por análisis multivariante, la seropositividad se asoció con ser médico (OR 2,37, IC 95%: 1,61-3,49), enfermero (OR1,67, IC 95%: 1,14-2,46), auxiliar de enfermería (OR1,84, IC95%: 1,24-2,73), trabajar en áreas de hospitalización COVID-19 (OR 1,71, IC 95%: 1,22-2,40) y no COVID-19 (OR 1,88, IC 95%: 1,30-2,73) y en Urgencias (OR 1,51, IC 95%: 1,01-2,27). CONCLUSIONES: El estudio de seroprevalencia desveló una alta tasa de infección que pasó desapercibida entre los trabajadores sanitarios. Los pacientes sin sospecha clínica de COVID-19 y los trabajadores sanitarios asintomáticos pueden ser una fuente importante de transmisión nosocomial del SARS-CoV-2

Hospital-Wide SARS-CoV-2 seroprevalence in health care workers in a Spanish teaching hospital.

INTRODUCTION: Hospital-wide SARS-CoV-2 seroprevalence is rarely explored and can identify areas of unexpected risk. We determined the seroprevalence against SARS-CoV-2 in all health care workers (HCW) at a hospital. METHODS: Cross-sectional study (14-27/04/2020). We determined SARS-CoV-2 IgG by ELISA in all HCW including external workers of a teaching hospital in Madrid. They were classified by professional category, working area, and risk for SARS-CoV-2 exposure. RESULTS: Among 2919 HCW, 2590 (88,7%) were evaluated. The mean age was 43.8 years (SD 11.1), and 73.9% were females. Globally, 818 (31.6%) workers were IgG positive with no differences for age, sex or previous diseases. Of these, 48.5% did not report previous symptoms. Seropositivity was more frequent in high- (33.1%) and medium- (33.8%) than in low-risk areas (25.8%, p=0.007), but not for hospitalization areas attending COVID-19 and non-COVID-19 patients (35.5 vs 38.3% p>0.05). HWC with a previous SARS-CoV2 PCR-positive test were IgG seropositive in 90.8%. By multivariate logistic regression analysis seropositivity was significantly associated with being physicians (OR 2.37, CI95% 1.61-3.49), nurses (OR 1.67, CI95% 1.14-2.46), nurse assistants (OR 1.84, CI95% 1.24-2.73), HCW working at COVID-19 hospitalization areas (OR 1.71, CI95% 1.22-2.40), non-COVID-19 hospitalization areas (OR 1.88, CI95% 1.30-2.73), and at the Emergency Room (OR 1.51, CI95% 1.01-2.27). CONCLUSIONS: Seroprevalence uncovered a high rate of infection previously unnoticed among HCW. Patients not suspected of having COVID-19 as well as asymptomatic HCW may be a relevant source for nosocomial SARS-CoV-2 transmission.

Differences in the use of health resources by Spanish and immigrant HIV-infected patients

Background HIV-immigrant use of health services and related cost has hardly been analysed. We compared resource utilisation patterns and direct health care costs between Spanish and immigrant HIV-infected patients. Methods All HIV-infected adult patients treated during the years 2003-2005 (372 patients) in this hospital were included. We evaluated the number of out-patient, Emergency Room (ER) and Day-care Unit visits, and number and length of admissions. Direct costs were analysed. We compared all variables between immigrant and Spanish patients. Results Immigrants represented 12% (n=43) of the cohort. There were no differences in the number of out-patient, ER, and day-care hospital visits per patient between both groups. The number of hospital admissions per patient for any cause was higher in immigrant than in Spanish patients, 1.3 (4.4) versus 0.9 (2.7), P=.034. A high proportion of visits, both for the immigrant (45.1%) and Spanish patients (43.0%), took place in services other than Infectious Diseases. Mean unitary cost per patient per admission, out-patient visits and ER visits were similar between groups. Pharmacy costs per year was higher in Spanish patients than in immigrants (7351.8 versus 7153.9 euros [year 2005], P=.012). There were no differences in the total cost per patient per year between both groups. The global distribution of cost was very similar between both groups; almost 75% of the total cost was attributed to pharmacy in both groups. Conclusions There are no significant differences in health resource utilisation and associated costs between immigrant and Spanish HIV patients (AU)

Introducción: La utilización y coste de los servicios sanitarios por parte de los pacientes inmigrantes con infección por VIH apenas se ha estudiado. Se evaluó la asistencia sanitaria y su coste directo asociado entre los pacientes con VIH españoles e inmigrantes. Métodos: Se incluyeron todos los pacientes adultos infectados por el VIH atendidos durante los años 2003-2005 (372 pacientes) en el hospital. Se evaluó el número de consultas, visitas a Urgencias (UR), a Hospital de Día (HD) y el número y duración de los ingresos. Se analizaron los costes directos. Se comparan todas las variables entre los inmigrantes y los españoles. Resultados: Los inmigrantes representan un 12% (n = 43) de la cohorte. No hubo diferencias en el número de consultas, visitas a UR y HD por paciente entre ambos grupos. El número de ingresos por cualquier causa por paciente fue mayor en los inmigrantes que en los españoles, 1.3 (4.4) versus 0,9 (2,7), p = 0.034. Una alta proporción de consultas se realizaron en servicios diferentes de Infecciosas, tanto en los inmigrantes (45,1%) como en los españoles (43,0%). Los costes medios por paciente fueron similares en ambos grupos respecto a hospitalización, consulta y UR. El coste de farmacia por ano fue mayor en los españoles que los inmigrantes (7.351,8 D frente a 7,153.9 D [D año 2005] , p = 0,012). No hubo diferencias en el coste total por paciente por ano entre ambos grupos. La distribución total del coste fue muy similar entre ambos grupos; casi el 75% del coste total se atribuyó al tratamiento farmacológico en ambos grupos. Conclusiones: No hay diferencias signiflcativas relevantes en la atención sanitaria y coste asociado entre los pacientes con infección por VIH inmigrantes y españoles (AU)

Differences in the use of health resources by Spanish and immigrant HIV-infected patients.

BACKGROUND: HIV-immigrant use of health services and related cost has hardly been analysed. We compared resource utilisation patterns and direct health care costs between Spanish and immigrant HIV-infected patients. METHODS: All HIV-infected adult patients treated during the years 2003-2005 (372 patients) in this hospital were included. We evaluated the number of out-patient, Emergency Room (ER) and Day-care Unit visits, and number and length of admissions. Direct costs were analysed. We compared all variables between immigrant and Spanish patients. RESULTS: Immigrants represented 12% (n=43) of the cohort. There were no differences in the number of out-patient, ER, and day-care hospital visits per patient between both groups. The number of hospital admissions per patient for any cause was higher in immigrant than in Spanish patients, 1.3 (4.4) versus 0.9 (2.7), P=.034. A high proportion of visits, both for the immigrant (45.1%) and Spanish patients (43.0%), took place in services other than Infectious Diseases. Mean unitary cost per patient per admission, out-patient visits and ER visits were similar between groups. Pharmacy costs per year was higher in Spanish patients than in immigrants (7351.8 versus 7153.9 euros [year 2005], P=.012). There were no differences in the total cost per patient per year between both groups. The global distribution of cost was very similar between both groups; almost 75% of the total cost was attributed to pharmacy in both groups. CONCLUSIONS: There are no significant differences in health resource utilisation and associated costs between immigrant and Spanish HIV patients.

Effect of simultaneous use of highly active antiretroviral therapy on survival of HIV patients with tuberculosis.

INTRODUCTION: The optimal timing for initiation of highly active antiretroviral therapy (HAART) in patients with AIDS and tuberculosis (TB) is an unresolved question. To assess the effect of HAART on the survival of patients with TB, we designed this study. METHODS: We selected all HIV patients included in the COMESEM cohort with TB diagnosis after 1996. Clinical and epidemiological data were registered. We compared patients who started HAART at the diagnosis of TB [simultaneous therapy (ST)] or not. Survival was assessed by Cox analysis. RESULTS: Among the 6934 HIV patients included in the cohort, 1217 patients had TB, 322 of them (26.5%) after 1996. At the time of TB diagnosis, 45% of them started HAART (ST). There were no differences between groups regarding basal characteristics, except for a lower viral load in ST patients. ST therapy was associated with improved survival (hazard ratio 0.38; 95% confidence interval 0.20 to 0.72, P = 0.003). By univariate analysis, survival was also associated with no endovenous drug use and a later year of TB diagnosis. After adjusting for other prognostic variables, by Cox multivariate analysis, ST remained robustly associated with improved survival (hazard ratio 0.37; 95% confidence interval 0.17 to 0.66, P = 0.001). CONCLUSIONS: Simultaneous HAART and TB treatment in HIV patients with TB is associated with improved survival.

Características clinicoepidemiológicas de los pacientes recién diagnosticados de infección por el VIH / Clinico-epidemiological characterístic of recently diagnoses HIV-infected patients

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Desde la informática clínica hasta el soporte del proceso asistencial / From clinical informatics to the healthcare process

En los últimos años, las tecnologías de la información están comenzando a incorporarse masivamente en un entorno sanitario que, hasta ahora, no ha aprovechado las ventajas que puede aportar a la calidad asistencial la gestión del conocimiento mediante soportes informáticos. Los sistemas de información originales estaban orientados a la gestión clínica y no aportaban ningún valor al profesional asistencial. Además, las plataformas existentes no están realizando la necesaria evolución de los sistemas tanto en su alcance como en sus aspectos tecnológicos y funcionales. En un período de reorganización de los sistemas de salud y existiendo una clara concienciación social e institucional para el aprovechamiento de los avances tecnológicos, es el momento de hacer una rápida evaluación de lo que han supuesto los sistemas informáticos en centros sanitarios y qué expectativas pueden plantearse para el futuro de la informática en la sanidad (AU)

La informatización del trabajo clínico asistencial: análisis crítico desde la experiencia de un centro hospitalario de nueva creación / The computerized clinical record and its use in the clinical work: critical reappraisal of the experience of a new born hospital

La informatización de la historia clínica es una necesidad importante para un hospital moderno, que lleva aparejada ventajas notables respecto al funcionamiento tradicional en papel, pero que también supone inconvenientes que no deben perderse de vista. Para su implantación en un centro concreto es imprescindible disponer de un plan de desarrollo y un método de trabajo: 1) Es necesario definir un objetivo final claro y aceptado entre la empresa informática y la organización hospitalaria. 2) Es necesario establecer un método de trabajo que permita las interacciones necesarias entre técnicos informáticos y médicos usuarios. 3) Consensuado el objetivo final, debe definirse un plan de desarrollo por fases. Actualmente estamos en un punto de desarrollo desde donde sólo alcanzamos a intuir las potencialidades reales de lo que se puede llegar a alcanzar. El proyecto de informatización de un hospital lleva aparejados una serie de costes que deben ser tenidos en cuenta. Este coste debe ser aceptado por todas las instancias implicadas para que se pueda tener éxito en el proceso. (AU)