Trial of Oxford COVID-19 vaccine starts in Brazil

Volunteers in Brazil have begun receiving a trial vaccine against COVID-19, in Latin America’s first phase 3 COVID-19 clinical trial.

The trial officially began on Saturday 20th June and will enrol 5,000 volunteers across the country. Vaccinations will take place in Sao Paulo, Rio de Janeiro and a site in the Northeast of Brazil.

The Brazilian Health Regulatory Agency (ANVISA) approved the inclusion of Brazil in the clinical trials on 2nd June, which are being conducted in partnership with AstraZeneca. The trial is being sponsored entirely by Brazilian entrepreneurs.

Professor Sue Ann Costa Clemens, investigator and study coordinator from UNIFESP, said: ‘It is an honour for me, as investigator and for my country to be selected to support the clinical development of this candidate vaccine and help the world to face a global challenge. This study has contributed to a major achievement in public health already, as the Brazilian Ministry of Health signed on June 27, an agreement for local production of ChAdOx1 nCoV-19 with AstraZeneca Brazil.’

Professor Andrew Pollard, Chief investigator of the Oxford Vaccine Trial at Oxford University said: ‘It is a privilege to be working with the researchers at the Federal University of São Paulo – UNIFESP on the first COVID-19 vaccine trial in Latin America in the next stage of this important trial.

‘The global coronavirus pandemic still presents an unprecedented threat to human health worldwide, but equally unprecedented is the impressive way researchers and scientists around the world have been able to collaborate on the clinical development work to combat this threat.’

The Federal University of São Paulo – UNIFESP is collaborating with the University of Oxford and the Oxford Vaccine Group on the Brazil trial. The Brazilian Ox1Cov-19 Vaccine Trial aims to find a vaccine that will prevent infection by SARS-CoV-2, the virus that causes COVID-19. The technical name of the vaccine is ChAdOx1 nCoV-19, as it is made from a virus called ChAdOx1, which is a weakened and non-replicating version of a common cold virus (adenovirus). The vaccine has been engineered to express the SARS-CoV-2 spike protein.

The vaccine was developed at the University of Oxford’s Oxford Jenner Institute and is currently on trial in the UK, where over 4,000 participants are already enrolled into the clinical trial and enrolment of an additional 10, 000 participants is planned.

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