There was a vaccine out for it for a few years but they pulled it from the market, the anti vaxers gave it a bad reputation in the news and so since they did not sell that many they just pulled it so as not to be the target anymore.
I hope you test negative! I know some people that have it, it's misery but I wonder If I do at times. To many overall body aches and yes..knees hurt as I type this!