Low Cost Electronic Device for Proximity tracking
One of the difficulties epidemiologists face in gaining control over the spread of a disease is tracking who was in contact with a known infected person during the time-frame they were contagious. My understanding is that this is done by interviews with family, friends, coworkers etc.. however this can be error prone, inaccurate, and time consuming.
The current proposal involves large scale manufacturing of low cost devices which can provide information about who an infected individual was in contact with in the last days during the incubation period, providing an ordered list of highest frequency of contacts, facilitating quick alerting to those in most danger of being infected.
Each device (size of keychain) has a unique identification number.
keyfob proximity tracking
Associated contact information for this device (first name, last name, address, contact phone and email) is stored in a secure database available to field level health officials only.
When device A is within 10 feet of another device B, both devices will exchange IDs and log timestamp of exchange. History of these logged exchanges would be limited to 3 weeks.
If the owner of device A is tested positive for Ebola, health officials will have access to contact information of all individuals this person had contact with in the last 3 weeks. High frequency of contact individuals can be brought in for testing. Low frequency of contact individuals can be advised to keep themselves in isolation via other means such as phone or email.
For this to work the entire population would need to be given this device subsidized by government program. Low cost FSK transceivers can be as low as 3$ per unit sold individually. Flash storage and 8 bit microcontrollers are in the same price range.
Using cell phone GPS records is an alternate way of finding out the same information and can also be used to to obtain similar data, however this approach is much more resource intensive because of the amount of data needed to process, and cell phones are more costly to puchase.
Out of concern for privacy this information should only only be shared on a need to know basis. One way of handling this would be for the ID to contact database to be completely closed (no access except for IT admins), and the process of notifying the frequent contacts be automated.
Given that the Ebola cases have been doubling every 2 weeks (at this rate we could see billion+ people infected in just a few years) a more scientifically accurate way of managing the spread of the disease is warranted.