An outbreak of poisonous mushrooms that has killed four people and sickened dozens more across California has claimed three more victims in a wealthy wine country community. The three adults had to be hospitalized after picking wild mushrooms in Napa County’s Deer Park, health officials said. None of the victims are Napa County residents, and they foraged the mushrooms between Deer Park Road, Fawn Road and Silverado Trail. Dozens of people in California have been poisoned by wild mushrooms since November of last year, leading to four deaths and sickening nearly 50. Deer Park Volunteer Fire Station 21 “Recent rains have contributed to the resurgence of poisonous wild mushrooms in California, including in Napa,” said Dr. Christine Wu, public health officer for Napa County, in a statement. “Poisonous mushrooms can look and taste similar to safe mushrooms, and even experienced mushroom hunters have been affected by this outbreak,” she added.…