LONDON, United Kingdom (AFP) — Drug firm AstraZeneca on Friday announced positive results from a trial of a treatment for Covid-19 symptoms. The drug, made from a combination of two antibodies, was initially developed as a treatment for those who had already been exposed to the disease. A new trial of 5,197 participants who had not been exposed showed a 77-percent reduced risk of developing symptomatic disease, with no severe cases recorded, Astra said in […]