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1.
Sci Rep ; 12(1): 3788, 2022 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-35260713

RESUMO

Immunosenescence may impact the functionality and breadth of vaccine-elicited humoral immune responses. The ability of sera to neutralize the SARS-CoV-2 spike protein (S) from Beta, Gamma, Delta, and Epsilon variants of concern (VOCs) relative to the ancestral Wuhan-Hu-1 strain was compared in Comirnaty COVID-19-vaccinated elderly nursing home residents, either SARS-CoV-2 naïve (n = 22) or experienced (n = 8), or SARS-CoV-2 naïve younger individuals (n = 18) and non-vaccinated individuals who recovered from severe COVID-19 (n = 19). In all groups, except that including SARS-CoV-2-experienced nursing home residents, some participants lacked NtAb against one or more VOCs, mainly the Beta variant (15-20%). Serum NtAb titers were lowest against the Beta variant followed by Gamma, Delta and Epsilon variants. Overall, fold change reduction in NtAb titers relative to the ancestral strain was greatest for the Beta variant (6.7-19.4) followed by Gamma (4.8-16.0), Epsilon (2.9-13.4), and Delta (3.5-6.5) variants, although subtle differences were observed for Beta, Epsilon and Delta variants across comparison groups. In summary, older age, frailty, and concurrence of co-morbidities had no major impact on the serum NtAb activity profile against SARS-CoV-2 VOCs.


Assuntos
Anticorpos Neutralizantes/imunologia , Vacinas contra COVID-19/administração & dosagem , COVID-19/prevenção & controle , SARS-CoV-2/imunologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos Antivirais/sangue , Anticorpos Antivirais/imunologia , COVID-19/virologia , Vacinas contra COVID-19/imunologia , Feminino , Humanos , Imunidade Humoral , Masculino , Pessoa de Meia-Idade , Testes de Neutralização , Casas de Saúde , Domínios Proteicos/imunologia , Estudos Retrospectivos , SARS-CoV-2/isolamento & purificação , Glicoproteína da Espícula de Coronavírus/química , Glicoproteína da Espícula de Coronavírus/genética , Glicoproteína da Espícula de Coronavírus/imunologia , Glicoproteína da Espícula de Coronavírus/metabolismo
4.
Clin Microbiol Infect ; 27(11): 1672-1677, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34174397

RESUMO

OBJECTIVES: The immunogenicity of the Comirnaty® vaccine against coronavirus disease 2019 (COVID-19) has not been adequately studied in elderly people with comorbidities. We assessed antibody and T-cell responses targeted to the S protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) following full vaccination in nursing-home residents. METHODS: Sixty nursing-home residents (44 female, age 53-100 years), of whom ten had previously been diagnosed with COVID-19, and 18 healthy controls (15 female, age 27-54 years) were recruited. Pre- and post-vaccination blood specimens were available for quantification of total antibodies binding the SARS-CoV-2 S protein and for enumeration of SARS-CoV-2 S-reactive IFN-γ CD4+ and CD8+ T cells by flow cytometry. RESULTS: The seroconversion rate in (presumably) SARS-CoV-2-naïve nursing-home residents (41/43, 95.3%) was similar to that in controls (17/18, 94.4%). A booster effect was documented in post-vaccination samples of nursing-home residents with prior COVID-19. Plasma antibody levels were higher (p < 0.01) in recovered nursing-home residents (all 2500 IU/mL) than in individuals across the other two groups (median 1120 IU/mL in naïve nursing-home residents and 2211 IU/ml in controls). A large percentage of nursing-home residents had SARS-CoV-2 S-reactive IFN-γ CD8+ (naïve 31/49, 63.2%; recovered 8/10, 80%) or CD4+ T cells (naïve 35/49, 71.4%; recovered 7/10, 70%) at baseline, in contrast to healthy controls (3/17, 17.6% and 5/17, 29%, respectively). SARS-CoV-2 IFN-γ CD8+ and CD4+ T-cell responses were documented in 88% (15/17) and all control subjects after vaccination, respectively, but only in 65.5% (38/58) and 22.4% (13/58) of nursing-home residents. Overall, the median frequency of SARS-CoV-2 IFN-γ CD8+ and CD4+ T cells in nursing-home residents decreased in post-vaccination specimens, whereas it increased in controls. CONCLUSION: The Comirnaty COVID-19 vaccine elicits robust SARS-CoV-2 S antibody responses in nursing-home residents. Nevertheless, the rate and frequency of detectable SARS-CoV-2 IFN-γ T-cell responses after vaccination was lower in nursing-home residents than in controls.


Assuntos
Linfócitos B/imunologia , Vacinas contra COVID-19 , COVID-19 , Linfócitos T , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos Antivirais , COVID-19/imunologia , COVID-19/prevenção & controle , Vacinas contra COVID-19/imunologia , Feminino , Humanos , Imunidade , Interferon gama/imunologia , Masculino , Pessoa de Meia-Idade , Casas de Saúde , Glicoproteína da Espícula de Coronavírus/imunologia , Linfócitos T/imunologia
6.
Gac. sanit. (Barc., Ed. impr.) ; 32(4): 386-389, jul.-ago. 2018. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-174166

RESUMO

Es objetivo de este artículo mostrar una experiencia de práctica novedosa implementada por la dirección de un departamento de salud. Se expone un modelo organizativo de coordinación sociosanitaria entre los diferentes niveles asistenciales y sectores, estableciendo sinergias de los recursos sociales y sanitarios comunes del Departamento de Salud Clínico-Malvarrosa (Valencia). Tras un año, se han constituido cinco consejos de salud de zona básica en atención primaria y una comisión de coordinación sociosanitaria integrada por tres subcomisiones: 1) de atención asistencial social y sanitaria, 2) de asociacionismo y voluntariado hospitalario, y 3) de acción comunitaria y participación ciudadana. La estructura organizativa propuesta se ha consolidado y las acciones realizadas se han valorado de manera positiva por las diferentes personas implicadas. Se ha generado una red de comunicación social y sanitaria: interdepartamental, extradepartamental y extrahospitalaria


The objective of this article is to show an experience of new practice as implemented by the management of a Department of Health. An organisational model is shown of sociosanitary coordination between the different levels of care and sectors, establishing synergies of the common social and health resources of the Clínico-Malvarrosa Department of Health (Valencia, Spain). After one year, five basic health councils have been set up in Primary Care and a Sociosanitary Coordination Commission composed of three subcommittees: 1) socio and health care, 2) associationism and hospital volunteering, and 3) community action and citizen participation. The proposed organisational structure has been consolidated, the actions carried out have been valued positively by the different agents involved. It has generated a network of social and health communication: interdepartmental, extra-departmental and out-of-hospital


Assuntos
Humanos , Regulação e Fiscalização em Saúde , Administração Sanitária/tendências , Planejamento Participativo , Estratégias de Saúde Locais , Colaboração Intersetorial , Instrumentos para a Gestão da Atividade Científica , Participação da Comunidade , 35249
7.
Gac Sanit ; 32(4): 386-389, 2018.
Artigo em Espanhol | MEDLINE | ID: mdl-28958572

RESUMO

The objective of this article is to show an experience of new practice as implemented by the management of a Department of Health. An organisational model is shown of sociosanitary coordination between the different levels of care and sectors, establishing synergies of the common social and health resources of the Clínico-Malvarrosa Department of Health (Valencia, Spain). After one year, five basic health councils have been set up in Primary Care and a Sociosanitary Coordination Commission composed of three subcommittees: 1) socio and health care, 2) associationism and hospital volunteering, and 3) community action and citizen participation. The proposed organisational structure has been consolidated, the actions carried out have been valued positively by the different agents involved. It has generated a network of social and health communication: interdepartmental, extra-departmental and out-of-hospital.

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