Coronavirus COVID-19 crowd sourced open data study together with research scientists are launching a crowd sourcing open data science study for home monitoring and early detection of respiratory infectious disease such as Coronavirus (Covid-19).  There is no previous study of systematic ECG recordings in humans for both pre- and post Coronavirus contraction.   We believe that this type of large data collection can only be obtained with crowd sourced methods.   According to the study hypothesis it is necessary to do a specific ‘Vagus ECG test’ protocol with controlled breathing to detect the subtle cardiac/respiratory changes which can occur early in the disease progress.  

The aim for this study is to obtain ECG data from people who have not yet been infected by COVID-19 but during the course of the data-collection maybe are infected by it or by some other viral or bacterial disease.    The study hypothesis is that this data can provide vital quick access to information for scientists worldwide so that they better can follow and understand the disease progress and find out new early detection methods for cardiac-respiratory infections such as COVID-19 (caused by SARS-CoV-2). 

The study is done with participants own Vagus hand-to-hand ECG smartwatches and its ‘Vagus ECG Test’ recorded data. To participate you need to have a Vagus ECG smartwatch or buy one from the shop.   If you have a watch – email us that you register to participate.   For those buying a watch, please write COVID-19 as reference in the order.   

The participating persons commit to doing three 90 seconds ‘Vagus ECG Tests’ per day.  One in the morning after getting up from bed, one around noon before meal and one in the evening before going to bed.   One test only lasts 90 seconds and the user needs to sit with hands resting on a table (or own legs) and follow the instructions displayed on the watch.   After each test there is an option to include a note of health status and for instance body temperature measurements if the person is self-monitoring it. We recommend such monitoring.  After a possible disease onset we recommend more frequent testing and regular downloads of the ECG recordings to a medical professional or relevant health care provider.  These downloads and sendouts are free for all study-participants.  People in the same houshold can use the same watch as long as they use a separate smartphone, Vagus App and user account.  Monitoring and analysis is free for persons in the same houshold.   The watch is waterproof and it can be disinfected between use.

The study data collection period is one year.   All study data will be anonymized and made available for free to researchers and individuals.   The participants and data providers are not paid for doing this data collection and study.   Study researchers receive no financial compensation from Vagus Health Ltd. We hope for a large and diverse participants group since the success of the study depends on finding at least several persons who contract a disease while collecting data.

Study team members will monitor that the full and unselected data is provided to the open data platform access and publish a monthly research report.  The study data will be uploaded bi-weekly on the open access data portal at  Vagus Health Ltd and data collected by this study is GDPR compliant.

How to participate if you don’t have a watch:   Order a watch, write in the order COVID-19 and then enter here with your email and the password we send you:

Data Collection and -reporting team members: Gustaf Kranck, CEO and Founder, Vagus Health Ltd, Mattias Nordström, CTO and co-founder, Vagus Health Ltd Sellström, CEO,, Sweden,   Dr Fintan Nagle, Data Scientist, UCL, London UK, Prof. Johan Lundin, Professor at Karolinska Institutet and Research Director at FIMM

UPDATE 26th April 2020: The first data publication is estimated to be available end of June 2020, subject to that we by then have a sufficient amount of participants (>100) who have done on average 2 Vagus ECG Test per day for at least one month.

UPDATE 12th June 2020:  None of our study participants has to date been infected with SARS-Cov-2 and therefore we have no relevant data yet to publish.  We will be updating the situation as the amount of study participants increase and a sufficient amount of participants have contracted COVID-19 in such manner that we know when the initial infection and/or symptomes occured.       

UPDATE 30th of July 2020: As we have not been able to get a sufficient amount of test-persons with data from both pre- and post Covid-19, we have decided to amend the study to cover post Covid-19 syndromes only.   We are targeting finding non-symptomatic issues such as low grade Cardiac-, Respiratory- and Nerve inflammations.

UPDATE 30th of September 2020: We will conduct our first post-Covid Syndromes study in Stockholm area.   Please contact if you want to participate.  (gustaf(et)  We are looking both for study participants who have had Covid-19 and a control group that knowingly has not had COVID-19. 

UPDATE 15th of January 2021:  The global ‘Long-Covid’ study will headed by Professor Johan Lundin at Karolinska Institute.   We are now looking for a post-doc or doctorate student for this study.  Please contact  (gustaf(et)

The study science background and hypothesis paper – press here to access.

Our Covid-19 study Press Release – press here for full text.

Open data licensing terms:



Medical disclaimer: The Vagus ECG smartwatch and the Vagus ECG Test analytics are not yet approved medical devices or diagnostics tools.  They are in beta-testing phase.   There are no published medical trials to yet confirm the study’s hypotheses.  One aim for this study is to obtain data to confirm the hypothesis and publish a study.   The analytics or risk assessments presented by the Vagus App or in the user cloud interface should not be used as medical diagnostics.  They should not be used to decide alternations or additions to medical treatments without consulting a medical doctor or certified professional.