Â
Ângela Afonso
Researcher at Instituto de Medicina Molecular
Publications - 6
Citations - 208
Ângela Afonso is an academic researcher from Instituto de Medicina Molecular. The author has contributed to research in topics: Seroprevalence & Antibody. The author has an hindex of 3, co-authored 6 publications receiving 115 citations.
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Journal ArticleDOI
Seroprevalence of anti-SARS-CoV-2 antibodies in COVID-19 patients and healthy volunteers up to 6 months post disease onset.
Patrícia Figueiredo-Campos,Birte Blankenhaus,Catarina Mota,Andreia Gomes,Marta Serrano,Silvia Ariotti,Catarina Costa,Helena Nunes-Cabaço,António M. Mendes,Pedro Gaspar,M. Conceição Pereira-Santos,Fabiana Rodrigues,Jorge Condeço,M. Antonia Escoval,Matilde Santos,Mário Ramirez,José Melo-Cristino,J. Pedro Simas,J. Pedro Simas,Eugenia Vasconcelos,Ângela Afonso,Marc Veldhoen +21 more
TL;DR: This work quantified IgM, IgG, and IgA antibodies recognizing the SARS‐CoV‐2 receptor‐binding domain (RBD) or the Spike (S) protein over a period of 6 months following COVID‐19 onset and highlights a continued level of circulating neutralising antibodies in most people with confirmed Sars‐Co V‐2.
Journal ArticleDOI
Protein Quality Assessment on Saliva Samples for Biobanking Purposes.
Nuno Rosa,Jéssica Marques,Eduardo Esteves,Mónica Fernandes,Vera M. Mendes,Ângela Afonso,Sergio Dias,Joaquim Polido Pereira,Bruno Manadas,Maria José Correia,Marlene Barros +10 more
TL;DR: It is concluded that it is possible to collect saliva using an easy and inexpensive protocol, resulting in saliva samples for protein analysis with sufficient quality for biobanking purposes.
Journal ArticleDOI
Longitudinal SARS-CoV-2 seroprevalence in Portugal and antibody maintenance 12 months after infection.
Luisa Canto e Castro,Andreia Gomes,Marta Serrano,Ana Helena Guia Pereira,Rita A. Ribeiro,Patrícia Napoleão,Inês Domingues,Cláudia Silva,Júlia Fanczal,Ângela Afonso,Andreia Lopes,Ionela Toader,Maria José Rego de Sousa,José Germano Rego de Sousa,Germano de Sousa,Maria M. Mota,Bruno Silva-Santos,Marc Veldhoen,Ruy M. Ribeiro,Ruy M. Ribeiro,Ruy M. Ribeiro +20 more
TL;DR: In this article, a longitudinal epidemiological study was conducted, with a stratified quota sample of the Portuguese population, including ELISA determination of antibody class and titers, showing the seroprevalence changes 6 months later, up to the second week of March 2021, shortly following the third wave.
Journal ArticleDOI
Prevalence of SARS-CoV-2 Antibodies after First 6 Months of COVID-19 Pandemic, Portugal.
Luisa Canto e Castro,Ana Helena Guia Pereira,Rita A. Ribeiro,Catarina Alves,Luís Veloso,Vera Vicente,Dalila Alves,Inês Domingues,Cláudia Lobato da Silva,Andreia C. Gomes,Marta Serrano,Ângela Afonso,Marc Veldhoen,Maria José Rego de Sousa,José Germano Rego de Sousa,Germano de Sousa,Maria M. Mota,Bruno Silva-Santos,Ruy M. Ribeiro +18 more
TL;DR: In this article, the authors tested 13,398 persons in Portugal for antibodies against severe acute respiratory syndrome coronavirus 2 by using a quota sample stratified by age and population density, and found a seroprevalence of 2.2%, 3-4 times larger than the official number of cases at the end of the first wave of the pandemic.