coronavirus vaccine November 23, 2020 6:26 am New COVID Vaccine Is 70% Effective AstraZeneca on Monday said an interim analysis of clinical trials showed its coronavirus vaccine has an average efficacy of 70% in protecting against the virus. Lisa Chavarria reports. Local 3:03 Fallen Chicago Police Officer Luis Huesca remembered at visitation 2:08 Visitation set for Officer Luis Huesca as reward increases to $100K 2:17 Reward increases to $100K for arrest in Chicago Police Officer Luis Huesca's killing 2:00 Thornton Township residents seek answers over use of taxpayer dollars 1:42 Warrant issued for suspect in murder of Chicago police officer