Advanced search
Start date

Infection of lymphoid tissues by pandemic respiratory viruses: SARS-CoV-2 and Influenza A H1N1

Grant number: 20/07063-1
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): April 01, 2022
Effective date (End): February 29, 2024
Field of knowledge:Biological Sciences - Microbiology
Principal Investigator:Eurico de Arruda Neto
Grantee:Thais Melquiades de Lima
Host Institution: Faculdade de Medicina de Ribeirão Preto (FMRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil


Respiratory viruses are the most frequent human pathogens, and among them, influenza A viruses and coronaviruses stand out for their pandemic potential and high pathogenicity. Recently, a new betacoronavirus called SARS-CoV-2, has spread worldwide, with great social impact, and more than 4.5 million cases. SARS-CoV-2 causes severe respiratory syndrome and there is already evidence that it also affects multiple organs, including secondary lymphoid organs, with consequent lymphopenia. Influenza A viruses (IAV) cause annual seasonal influenza outbreaks, but they can also cause pandemics when new viral strains are introduced into human populations. Studies by our group have shown a high frequency of detection of respiratory viruses in general in tonsils of children with adenotonsillar hypertrophy, but without symptoms of acute respiratory infection, with IAV and endemic coronaviruses are among them. The data have already been confirmed by other groups, and indicate that respiratory viruses may remain for prolonged periods in the lymphoepithelial tissues of the upper respiratory tract. Therefore, it is reasonable to propose the hypothesis that the permanence of these viruses may play a role in their pathogenesis and be a potential source of transmission in the community. In this sense, the project aims to understand the viral pathogenesis of the IAV and SARS-CoV-2 viruses in lymphoid tissues. The goals of this proposal are to investigate the phenotypic and functional characterization of infected cells, production of cytokines and experimental infection of animal models with IAV and SARS-CoV-2, to assess the effects of infection on lymphoid cell functions, and prolonged infection in late times.

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items

Please report errors in scientific publications list by writing to: