Results 1 to 10 of about 12,288 (265)

Immunogenicity, Effectiveness, and Safety of Inactivated Virus (CoronaVac) Vaccine in a Two-Dose Primary Protocol and BNT162b2 Heterologous Booster in Brazil (Immunita-001): A One Year Period Follow Up Phase 4 Study

open access: greenFrontiers in Immunology, 2022
BackgroundEffective and safe vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are critical to controlling the COVID-19 pandemic and will remain the most important tool in limiting the spread of the virus long after the ...
Rafaella F. Q. Grenfell   +37 more
doaj   +2 more sources

Comparison of immunogenicity and reactogenicity of inactivated SARS-CoV-2 vaccine (CoronaVac) in previously SARS-CoV-2 infected and uninfected health care workers [PDF]

open access: yesHuman Vaccines & Immunotherapeutics, 2021
The effects of inactivated SARS-CoV-2 vaccine (CoronaVac) on previously naturally infected individuals are unknown. This study compared immunogenicity and reactogenicity of CoronaVac in once naturally infected health-care workers (HCWs) and uninfected ...
Ahmet Soysal   +8 more
doaj   +3 more sources

Comparative Safety and Effectiveness of Heterologous CoronaVac–ChAdOx1 versus Homologous CoronaVac Vaccination in a Real-World Setting: A Retrospective Cohort Study

open access: yesVaccines, 2023
Background: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has outpaced vaccine availability and delivery from vaccine manufacturers, and thus, a scarcity of vaccines happened to many countries around the world.
Ayakarn Ruenkham   +4 more
doaj   +3 more sources

A 22 month prospective assessment of neutralizing and IgG antibody levels against SARS-CoV-2 variants following homologous and heterologous BNT162b2 boosting [PDF]

open access: yesScientific Reports
This 22-month cohort study investigated the durability and dynamics of humoral immune responses in 327 Malaysians vaccinated with either CoronaVac or BNT162b2 in early 2021, monitored up to 52 weeks following a BNT162b2 booster. Using the ImmuSAFE™ COVID 
Aini Syahida Mat Yassim   +11 more
doaj   +2 more sources

A Booster Dose of CoronaVac Increases Neutralizing Antibodies and T Cells that Recognize Delta and Omicron Variants of Concern

open access: goldmBio, 2022
CoronaVac is an inactivated SARS-CoV-2 vaccine approved by the World Health Organization (WHO). Previous studies reported increased levels of neutralizing antibodies and specific T cells 2 and 4 weeks after two doses of CoronaVac; these levels were ...
Bárbara M. Schultz   +37 more
doaj   +2 more sources

Immunogenicity and reactogenicity of heterologous COVID-19 vaccination in pregnant women

open access: yesHuman Vaccines & Immunotherapeutics, 2023
This open-labeled non-inferiority trial evaluated immunogenicity and reactogenicity of heterologous and homologous COVID-19 vaccination schedules in pregnant Thai women.
Chenchit Chayachinda   +16 more
doaj   +1 more source

Immunogenicity and reactogenicity after heterologous prime-boost vaccination with CoronaVac and ChAdox1 nCov-19 (AZD1222) vaccines

open access: yesHuman Vaccines & Immunotherapeutics, 2022
Mass vaccination with a safe and effective vaccine may be the best way to control the COVID-19 pandemic. Heterologous prime-boost vaccination with the CoronaVac and AZD1222 vaccines may increase the immunogenicity elicited by either vaccine alone.
Guy Cohen   +11 more
doaj   +1 more source

Association Between the Effectiveness and Immunogenicity of Inactivated SARS-CoV2 Vaccine (CoronaVac) with the Presence of Hypertension among Health Care Workers

open access: yesClinical and Experimental Hypertension, 2022
Objective This study aimed to observe the association between the presence of hypertension with Covid-19 vaccine effectiveness among healthcare workers who received CoronaVac vaccination.
Achmad Rifai   +9 more
doaj   +1 more source

Safety and immunogenicity of inactive vaccines as booster doses for COVID-19 in Türkiye: A randomized trial

open access: yesHuman Vaccines & Immunotherapeutics, 2022
Protective neutralizing antibody titers reduce in time after COVID-19 vaccinations, as in individuals who have had COVID-19. This study aimed to evaluate the safety and immunogenicity of CoronaVac and TURKOVAC vaccines used as a booster dose after ...
Ahmet Omma   +20 more
doaj   +1 more source

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