Lyme Disease on the Rise in Northern California

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A picture taken at the French National Institute of Agricultural Research (INRA) in Maison-Alfort, on July 20, 2016 shows a tick, whose bite can transmit Lyme disease. (Photo: Bertrand Guay/Getty Images)

From 2004 to 2016 diseases spread by flea, mosquito and tick bites tripled in the U.S., according to a new study by the Centers for Disease Control. The increase includes viruses like West Nile, Zika and chikungunya, but it was Lyme Disease that accounted for 80 percent of incidents. We examine what's causing the surge of tick-borne diseases and how Lyme Disease in particular is affecting Northern California.

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