London, A Covid-19 vaccine manufactured by researchers at Oxford University generated an immune response from the disease in Phase-1 trial,'' The Telegraph reported even as official book of those answers are awaited.

Even the Oxford vaccine candidate is believed to be contributing the race among over 100 to obtain a successful protection against the disorder.

Oxford scientists have found that the jab activates a reply that could provide a"double citizenship" contrary to SARS-CoV-2, the virus that leads to Covid-19, The Telegraph report said on Wednesday.

Oxford in April announced an agreement with the UK-based global biopharmaceutical company AstraZeneca for the additional development, large-scale manufacture and potential supply of this Covid-19 vaccine candidate.

As the Phase 1 trial of the vaccine candidate began in April itself, a start of this Phase2/Phase-3 UK trial of this Oxford vaccine, named AZD1222, in roughly 10,000 adult volunteers, was first announced in May.

However, the outcome of the Phase 1 trial were still awaited.

In June, Astrazeneca CEO Pascal Soriot told Belgian radio station Bel RTL that the Oxford vaccine will likely offer protection from the illness for one year.

"We think it's going to protect for approximately a year," Soriot was quoted as saying.

As per a study in City A.M., AstraZeneca is aiming to deliver two billion doses of this drug by the end of the year.

The drugmaker had stated it had reached a deal with Europe's Inclusive Vaccines Alliance (IVA), spearheaded by Germany, France, Italy and the Netherlands, to supply up to 400 million doses at the University of Oxford's Covid-19 vaccine, with deliveries starting by the end of 2020.

The business completed similar agreements with the UK, the US, the Coalition for Epidemic Preparedness Innovations and Gavi the Vaccine Alliance for 700 million dosages, and it agreed a licence with the Serum Institute of India for its distribution of an extra one billion doses, mostly for low- and - middle-income nations.