London: Scientists at Imperial College London say they are immunizing hundreds of people with an experimental coronavirus vaccine in an early trial after seeing no worrying safety problems in a small number vaccinated so far.

Dr Robin Shattock, a professor at the college, told The Associated Press that he and colleagues had just finished a very slow and arduous process of testing the vaccine at a low dose in the initial participants and would now expand the trial to about 300 people, including some over age 75.

"It's well tolerated. There aren't any side effects," he said, adding it was still very early in the study. Shattock, who is leading the vaccine research at Imperial, said he hopes to have enough safety data to start inoculating several thousand people in October.

Since COVID-19 infections have dropped dramatically in Britain, making it difficult to determine whether or not the vaccine works, Shattock said he and his colleagues are also looking to test their vaccine elsewhere.

"We're looking very carefully at the pandemic, at the numbers where the hot spots are and talking to collaborators that have the facilities to do these kinds of studies," he said.

The Imperial vaccine uses synthetic strands of genetic code based on the virus. Once injected into a muscle, the body's own cells are instructed to make copies of a spiky protein on the coronavirus. That should in turn trigger an immune response so the body can fight off any future COVID-19 infection.

Earlier this week, the world's biggest coronavirus vaccine study started in the United States, with the first of 30,000 planned volunteers getting immunized with shots created by the US National Institutes of Health and Moderna Inc.

Several other vaccines made by China and by Britain's Oxford University, based on different vaccine technologies, began smaller final-stage tests in Brazil and other hard-hit countries earlier this month.

The World Health Organization has said multiple vaccine approaches are necessary for COVID-19, noting that the usual success rate for vaccine development is about 10 per cent.

Shattock said there were numerous coronavirus vaccines now in clinical trials, and he predicted that at least some of them would prove to be effective.

"We have 20 vaccines in clinical trials, (so) we can be pretty confident that at least two of those will work," he said. "It really depends on how strong the immune response needs to be to provide protection."

Shattock said he was optimistic the Imperial vaccine would work, but must await the scientific data from the trial.

"I'm just going to hold my breath and wait to see," he said. 

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Ballari: Former minister B Sriramulu and Gangavathi MLA Gali Janardhana Reddy addressed a joint press conference on Friday, a day after a violent clash broke out between rival Reddy groups over the installation of banners ahead of the Valmiki statue unveiling programme in the city.

Speaking to reporters, Sriramulu said the death of Rajasekhar Reddy, who was killed by a gunshot during the clash, was painful. He said he and his party would stand by the victim’s family and extend support to them. Alleging that Ballari MLA Nara Bharath Reddy was responsible for the incident, Sriramulu demanded legal action against him and called for a thorough probe to establish whose bullet caused Rajasekhar Reddy’s death.

Sriramulu further alleged that the clash was premeditated, claiming that a group had come near their residence with petrol-filled beer bottles and stones, allegedly with the intention of attacking them. He also alleged that there was an attempt to assault Janardhana Reddy.

Janardhana Reddy, addressing the media, said the incident had made him fear for his life. He alleged that there was an attempt to kill him and held Bharath Reddy responsible for the violence. Former minister Somasekhar Reddy, BJP Ballari district leaders and party workers were also present at the press meet.

The clash occurred on Thursday night in the Havambhavi area when rival groups confronted each other over putting up banners for the Valmiki statue unveiling scheduled for January 3. During the violence, a Congress worker was shot dead. Police have registered four separate cases in connection with the incident, including one taken up suo motu.

Responding to the allegations, Ballari MLA Bharath Reddy said the party was mourning the loss of its worker, Rajasekhar Reddy, whom he described as a close associate. He accused Janardhana Reddy of trying to divert attention from illegal mining issues and said the death had cast a shadow over the planned celebrations. He announced that the Valmiki statue unveiling programme had been postponed due to the prevailing atmosphere of grief.

Meanwhile, Ballari Rural MLA B Nagendra confirmed that the statue unveiling event had been temporarily deferred following the clash and on the advice of the Chief Minister. He said the programme would be held on a later date under the leadership of the Chief Minister and senior ministers. Nagendra also criticised Janardhana Reddy, saying there was no place for what he described as a “Republic of Ballari” mindset under the present administration, and asserted that the government would not allow any form of intimidation or lawlessness.