SARS-CoV-2 in saliva, viremia and seroprevalence for COVID-19 surveillance at a single hematopoietic stem cell transplantation center: a prospective cohort study



Document title: SARS-CoV-2 in saliva, viremia and seroprevalence for COVID-19 surveillance at a single hematopoietic stem cell transplantation center: a prospective cohort study
Journal: Revista do Instituto de Medicina Tropical de Sao Paulo
Database:
System number: 000547853
ISSN: 0036-4665
Authors: 1
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Institutions: 1Universidade Federal do Paraná, Departamento de Estomatologia, Curitiba, Paraná. Brasil
2Universidade Federal do Paraná, Complexo Hospital de Clínicas, Curitiba, Paraná. Brasil
3Universidade de São Paulo, Faculdade de Medicina, São Paulo, São Paulo. Brasil
4Universidade Federal do Paraná, Departamento de Genética, Curitiba, Paraná. Brasil
5Universidade Federal do Paraná, Setor Litoral, Curitiba, Paraná. Brasil
6Universidade de São Paulo, Faculdade de Odontologia, São Paulo, São Paulo. Brasil
Year:
Volumen: 64
Country: Brasil
Language: Inglés
English abstract This prospective cohort study aims to analyze the surveillance of COVID-19 at a single hematopoietic stem cell transplantation (HSCT) center in Brazil, in 29 patients undergoing allogeneic HSCT and 57 healthcare workers (nurses and dentists), through viral shedding of SARS-CoV-2 in saliva and plasma and seroprevalence of anti-SARS-CoV-2 IgG. In addition, we report two cases with prolonged persistent detection of SARS-CoV-2 without seroconversion. The sample collection was performed seven times for patients and five times for healthcare workers. Only two patients tested positive for SARS-CoV-2 in their saliva and plasma samples (6.9%) without seroconversion. All healthcare workers were asymptomatic and none tested positive. Two patients (6.9%) and four nurses (8%) had positive serology. No dentists had positive viral detection or positive serology. Our results reflect a low prevalence of positive RT-PCR and seroprevalence of SARS-CoV-2 in patients and healthcare workers at a single HSCT center. Results have also corroborated how the rigorous protocols adopted in transplant centers were even more strengthened in this pandemic scenario.
Keyword: COVID-19,
SARS-CoV-2,
Hematopoietic stem cell transplantation,
Healthcare workers
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