AstraZeneca coronavirus vaccine on Wednesday by extending it to adults under the age of 65.Authorities will consider giving it to older people after they analyse a US study that AstraZeneca said showed the jab provides strong protection to all adults, Spanish Health Minister Carolina Darias said on Monday.Also Read | Six wrong calls on post-covid economyDisclosing the results of a long-anticipated study, the British-Swedish drugmaker said its vaccine was 79 per cent effective overall at preventing symptomatic cases of Covid-19, including in older people, and that none of the more than 30,000 volunteers in the US study were hospitalised or developed severe Covid-19.Speaking to reporters during a weekly briefing, Darias said Spanish officials.