Wearing sensors to see how diseases spread
I am sandwiched in the middle of a Virgin America flight. The only thing worse about sitting in the middle seat is having the guy next to me constantly sneeze and cough
The Penn State researchers developed a new tool to keep track of the number of times disease can spread through contact events. The researchers tracked 788 high school students and kept tabs on who they came into contact with.
The scientists gave the volunteers a small sensor called motes to wear around with them. These motes were given their own tracking number. That way, when the people came into contact with other people with motes, the sensor recorded who was near-by. It records it in 20-second intervals.
The researchers reasoned even when you aren’t talking, you can catch a bad bug if that person sneezes or coughs near you. It’s not like you can remember everyone who passes you. The motes can detect if the person came close enough to spread the bug to you.
“If person A has contact with person B, and person B has contact with person C, chances are that persons A and C also have contact with each other,” Salathé said in statement. “Real data illustrating these triangles provide just one more piece of information to help us track how a disease actually spreads.”
The contact events aren’t completely random. There are more like closed triangles. However, individuals didn’t really stick out. For the most part, all the volunteers in the study tended to have a good number of person-to-person interactions throughout the day.
The problem with previous studies of the spread.
0 comments:
Post a Comment