Coronavirus August 3, 2020 7:40 am There May Never Be a ‘Silver Bullet' for COVID-19 Despite multiple promising vaccine candidates, World Health Organization Director General Tedros Adhanom Ghebreyesus warns we may not ever have a “silver bullet” to stop the disease. US & World Videos 1:31 CDC recommends updated Covid shot for everyone ages 6 months and up 0:52 Lifeguard shortage impacts LA County pool hours 2:17 LA County: Mask Mandate Could Return in Weeks 2:22 Avoiding a COVID Winter Surge