Gundersen Health System offers new COVID-19 vaccine opportunity, experts warn against Delta variant La Crosse doctors want more people vaccinated before fall begins to prevent future spikes July 6, 2021 6:26 PM Jordan Fremstad Updated: ONALASKA, Wis. (WKBT) – People can get their COVID-19 vaccine through Family Medicine appointments at Gundersen Health System’s Onalaska clinic. Doctors are stressing the vaccine’s importance as the delta variant spreads in La Crosse. Summer feels more like the season did before the one that sat quietly last year. The return of Riverfest filled Riverside Park again and we just found out Oktoberfest is a go for 2021. However, Gundersen’s vaccine expert Dr. Raj Naik said another strain of the COVID-19 virus is on their radar.