(CNN) The US House of Representatives has ordered an investigation into whether the Department of Defense experimented with ticks and other insects as biological weapons. In an amendment passed last week, the House calls for the Defense Department's Inspector General to look at whether any such experiments were done between the years 1950 and 1975. "Was there any accidental release anywhere or at any time of any of the diseased ticks?" Rep. Chris SmithThe most common disease spread by ticks is Lyme disease , which can cause multiple symptoms including fever, muscle aches, joint pain, rash and facial paralysis. If left untreated, it could lead to arthritis, nervous system problems and heart problems, according to the Centers for Disease Control and Prevention.

Source: CNN July 17, 2019 05:26 UTC