LOS ANGELES - A vaccine against the novel coronavirus will likely not be as simple as a quick shot from the doctor at your local pharmacy.Evidence and continuing studies are suggesting that people may need two doses, not just one in order for the vaccine to be effective.“We are applying that knowledge to determine rapidly the very best way to produce an effective, long-lasting vaccine against a new virus by testing strategies that have worked before and refining our vaccines and vaccination schedules as we learn more about the immune system’s response to COVID-19 and to vaccines that work in different ways,” Kelly Moore, the associate director for immunization education with the Immunization Action Coalition (IAC), said.Operation Warp Speed.