Lancet. The vaccine did not prompt any serious side effects, the journal said. The researchers said that they found their experimental COVID-19 vaccine produced a dual immune response in people aged 18 to 55. “We are seeing good immune response in almost everybody," said Dr.
Adrian Hill, director of the Jenner Institute at Oxford University. “What this vaccine does particularly well is trigger both arms of the immune system," he said.Hill said that neutralizing antibodies are produced — molecules which are key to blocking infection.