The residents of Nevada County, long known for having one of the lowest vaccination rates in California, are once again faced with the annual question: flu shot or no flu shot? Will the vaccine, which depends on how well Nevada County viruses match with the three used in the vaccine, be effective? Is this just a multi-billion-dollar scam promoted by vaccine manufacturers or is it the best defense against the dreaded high fever, aches and exhaustion? Could it save lives among our most vulnerable? Nevada County readers didn’t hold back when posed the questions, “Have you gotten your flu shot? …