'Long COVID-19' patients eager for answers about vaccines Vaccine impacts of COVID long haulers By: WFTS Staff and last updated 2021-04-15 13:19:36-04 While many people recover from COVID-19, others are finding symptoms that wonât go away. While researchers are working to find out whatâs behind what some call "long COVID," some patients are eager to hear if hope lies in a vaccine. Symptoms can include fatigue, shortness of breath, brain fog, gastrointestinal issues, and more, according to the NIH. The agency recently launched an initiative to study what it calls Post-Acute Sequelae of SARS-CoV-2 infection (PASC).