A study from a team at the La Jolla Institute for Immunology offers new evidence on how long COVID-19 survivors are protected from reinfection. The results are being hailed as “good news.” abc 10newsCoronaviruscoronavirus reinfectioncoronavirus vaccineCOVID-19COVID-19 immunityCOVID-19 reinfectionCOVID19derek staahlimmune systemIMMUNITYin-depthIndepthProtectionReinfectionvideoVITAMINvlogYouTube