The Marin/Sonoma Mosquito and Vector Control District is warning residents to take precautions while playing in the outdoors this winter, as ticks are out en force. The western black-legged tick, also called a deer tick, is most active from fall through early spring (the nymphs, or juveniles, are most active in the spring and summer). Tick bites can transmit the bacterium that causes Lyme disease, named after the town in Connecticut where it was discovered…