A team of medical researchers and bioethicists has published results in Science that furthers our understanding of coronavirus transmission. This evidence is enabling several international partners to assess the feasibility of developing mobile apps for instant contact tracing in record time. If rapidly and widely developed, these mobile apps could help to significantly slow the rate of transmission, and support countries to emerge from lockdowns safely, as restrictions are gradually eased.
The lead author on the Science paper explains, "We need a mobile contact tracing app to urgently support health services to control coronavirus transmission, target interventions and keep people safe. Our analysis suggests that about half of transmissions occur in the early phase of the infection, before you show any symptoms of infection. Our mathematical models also highlight that traditional public health contact tracing approaches provide incomplete data and cannot keep up with the pace of this pandemic."
The project is co-led explains "The mobile app concept we've mathematically modelled is simple and doesn't need to track your location; it uses a low-energy version of Bluetooth to log a memory of all the app users with whom you have come into close proximity over the last few days. If you then become infected, these people are alerted instantly and anonymously, and advised to go home and self-isolate. If app users decide to share additional data, they could support health services to identify trends and target interventions to reach those most in need."
The authors argue that a mobile app can reduce transmission at any stage of the epidemic, in countries or regions where the epidemic is just emerging, at the peak of the epidemic, or to support a safe transition out of restricted movement or lockdown. It could also help to reduce the serious social, psychological and economic impacts caused by widespread lockdowns. Critically, the researchers suggest a mobile app can help slow the spread of infection until vaccines and antiviral treatments become widely available.
Given the level of infection across much of Europe, the team believe ongoing development of a mobile app partnership across the union would massively reduce transmission and avoid a resurgence in the number of cases, providing an opportunity for all citizens using mobile contact tracing apps to contribute towards ending the epidemic. An app strategy could also be used by low and middle income countries, earlier in the epidemic, to rapidly control transmission and get ahead of the epidemic now.
The team highlight that the mobile contact tracing app should still be combined with isolation of cases, tracing and quarantine of contacts, physical distancing, scaled-up diagnostic testing, decontamination and hygiene measures.
The Science study highlights the importance of rigorous ethical standards underpinning the successful and appropriate use of mobile phone technology in addressing the coronavirus pandemic; including a number of ethical requirements needed to foster well-founded public trust and confidence.
As mobile apps launch over the coming weeks and months, the research team urges people to support official apps, developed by trusted institutions, and their partners, such as the mobile contact tracing apps under advanced assessment in several European countries.
https://045.medsci.ox.ac.uk/for-media
https://science.sciencemag.org/content/early/2020/03/30/science.abb6936
http://sciencemission.com/site/index.php?page=news&type=view&id=publications%2Fquantifying-sars-cov-2&filter=22
Controlling coronavirus transmission using a mobile app to trace close proximity contacts
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