Incidence of and Risk Factors for SARS-CoV-2 Infection Among Vaccinated Healthcare Workers During Emergence of SARS-CoV-2 Gamma Variant in the Amazon Region, Brazil, 2021
The COVID-19 attack rate among this cohort of HCWs with high vaccine coverage was low. Among vaccinated HCWs who tested positive, none tested positive after 1 week, indicating more rapid viral clearance vs unvaccinated HCWs. HCW vaccination is an important measure for HCW safety and more resilient healthcare systems.
Authors
- Evelyn Campelo
- Luciana Silva‐Flannery (ORCID: https://orcid.org/0000-0002-5762-8451)
- Cristiano Fernandes da Costa (ORCID: https://orcid.org/0000-0002-7821-5752)
- Alex Correia Vieira (ORCID: https://orcid.org/0000-0002-4987-3940)
- Charlene Siza (ORCID: https://orcid.org/0000-0002-6704-9509)
- Felipe Gomes Naveca (ORCID: https://orcid.org/0000-0002-2888-1060)
- Maria Clara Padoveze (ORCID: https://orcid.org/0000-0002-1912-7293)
- Juliana F. da Silva
- Juliette Morgan (ORCID: https://orcid.org/0000-0002-9926-8669)
- António R. Vieira
- Kledoaldo Lima (ORCID: https://orcid.org/0000-0003-2505-7516)
- Pritesh Lalwani (ORCID: https://orcid.org/0000-0003-2996-0446)
- Kelly M Hatfield (ORCID: https://orcid.org/0000-0003-1035-8420)
- Tirza Mattos
- G. de la Parra
- Aguyda Rayany Cavalcante Barbosa (ORCID: https://orcid.org/0000-0002-3644-9147)
- Fernanda C. Lessa (ORCID: https://orcid.org/0000-0002-8031-6376)
- Lucas Thiago Pereira da Silva (ORCID: https://orcid.org/0000-0003-3258-092X)
- Mateusz M. Pluciński (ORCID: https://orcid.org/0000-0002-7322-4625)
- Lúcia Yasuko Izumi Nichiata (ORCID: https://orcid.org/0000-0001-6515-4404)
- Roberto Zonato Esteves (ORCID: https://orcid.org/0000-0001-9537-7895)
- Ana Carolinne Portela Rocha (ORCID: https://orcid.org/0000-0003-3861-1977)
- Guilherme Araújo
- Tatyana Costa Amorim Ramos (ORCID: https://orcid.org/0000-0001-5718-3686)
- Barbara J. Marston
- Aida Cristina Tapajos
- Kiriath Rebello
Institutions
- Centers for Disease Control and Prevention (US)
- Instituto Nacional de Pesquisas da Amazônia (BR)
- Fundação de Medicina Tropical (BR)
- Centers for Disease Control and Prevention (UG)
- Fundação de Amparo à Pesquisa do Estado do Amazonas (BR)
- Escola Superior de Ciências da Saúde (BR)
- Universidade do Estado do Amazonas (BR)
- Hospital Perpetuo Socorro (ES)
- Universidade Federal do Amazonas (BR)
- Universidade Federal de São Paulo (BR)
Publication Details
- Journal
- Clinical Infectious Diseases
- Published
- 2025-07-30
- DOI
- https://doi.org/10.1093/cid/ciaf339
- Primary Topic
- SARS-CoV-2 and COVID-19 Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Centers for Disease Control and Prevention Foundation