Beginning early in the morning on Oct. 24, the MBTA and Department of Homeland Security will continue testing a network of sensors that are designed to alert authorities to potential bio-terror attacks in the subway system.
To test the sensors, which are meant to rapidly detect biological material, researchers will release non-dangerous bacterium in Davis, Porter and Harvard stations, according to an email from the MBTA.
The bacterium researchers are using, which is approved as a food supplement, is killed and "harmless," according to the MBTA's email. Testing will take place in early-morning hours when the MBTA is not operating.
Testing began in August, and further tests will take place periodically over the next year, the email says.
Dead Bacteria Terror Tests Begin on MBTA Red Line on Wednesday