Man who was Milwaukee County's 1st COVID case part of MU long haul study There are still a lot of unknowns about how COVID-19 affects you in the long-term. MILWAUKEE - There are still a lot of unknowns about how COVID-19 affects you in the long-term. Marquette University is studying just that. We've heard stories of coronavirus long-haulers -- people who still have symptoms months after having COVID-19. At the Athletic and Human Performance Research Center, they are working to turn those stories into quantified data. Ken McNulty Ken McNulty says he was the first confirmed COVID-19 case in Milwaukee County. One year later, he's testing to see if there are lasting effects on how his body moves.