Examinando por Autor "Pavez, Valentina"

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    Differential Severe Acute Respiratory Syndrome Coronavirus 2-Specific Humoral Response in Inactivated Virus-Vaccinated, Convalescent, and Breakthrough-Infected Subjects
    (Oxford University Press, 2023-10-01) Duarte, Luisa F.; Vázquez, Yaneisi; Diethelm-Varela, Benjamín; Pavez, Valentina; Berríos-Rojas, Roslye; Méndez, Constanza; Riedel, Claudia A.; White, Jessica A.; Kalergis, Alexis M.; Bueno, Susan M.; González, Pablo A.
    Background: We sought to identify potential antigens for discerning between humoral responses elicited after vaccination with CoronaVac (a severe acute respiratory syndrome coronavirus 2 [SARS-CoV-2] inactivated vaccine), natural infection, or breakthrough infection. Methods: Serum samples obtained from volunteers immunized with CoronaVac (2 and 3 doses), breakthrough case patients, and from convalescent individuals were analyzed to determine the immunoglobulin (Ig) G responses against 3 structural and 8 nonstructural SARS-CoV-2 antigens. Results: Immunization with CoronaVac induced higher levels of antibodies against the viral membrane (M) protein compared with convalescent subjects both after primary vaccination and after a booster dose. Individuals receiving a booster dose displayed equivalent levels of IgG antibodies against the nucleocapsid (N) protein, similar to convalescent subjects. Breakthrough case patients produced the highest antibody levels against the N and M proteins. Antibodies against nonstructural viral proteins were present in >50% of the convalescent subjects. Conclusions: Vaccinated individuals elicited a different humoral response compared to convalescent subjects. The analysis of particular SARS-CoV-2 antigens could be used as biomarkers for determining infection in subjects previously vaccinated with CoronaVac. © 2023 The Author(s). Published by Oxford University Press on behalf of Infectious Diseases Society of America.