Has the idea of two or three shots kept you from getting vaccinated? Starting next fall one shot will vaccinate you against both the seasonal and swine flu. LaCrosse county nurse Brynai Weigel. She hopes more people will get the shot if they only have to go through the experience once a year. Weigel says cases of H1N1 are low right now. But, a third wave of the virus could still hit the region.