The full two doses of Sinovac's CoronaVac vaccine against Covid-19 have produced a strong antibody response in children over three years old and teenagers, the Anadolu Agency quoted a new study on Tuesday.

The Lancet Infectious Diseases journal reported on Phase 1 and Phase 2 trials of CoronaVac run in the northeastern Chinese province of Hebei in children and adolescents aged three to 17...