London: There is growing hope that a vaccine against coronavirus may be given the green light by health regulators by the end of this year to be rolled out for a vaccination programme in six months’ time or even less, according to a UK media report.The vaccine candidate under trial by University of Oxford scientists in collaboration with pharmaceutical giant AstraZeneca is the furthest in the process of trials and, according to a report in ‘The Times’, it could be given the required clearances by Christmas in December.The newspaper quoted UK government sources involved in the making and distribution of vaccines as saying that a full vaccine roll-out programme for adults could take six months or less after approval.“We are looking at closer.