Publications by Marcel Salathé

Minimum days estimation for reliable dietary intake information: findings from a digital cohort

Background/Objectives Accurate dietary assessment is essential for understanding diet–health relationships, yet day-to-day variability in intake complicates the identification of individuals’ usual consumption. This study aimed to determine the minimum num ...

Springer Science and Business Media LLC2025

Personalized glucose prediction using in situ data only

Marcel Salathé, Rohan Singh

The worldwide rise in blood glucose levels is a major health concern, as various metabolic diseases become increasingly common. Diet, a modifiable health behaviour, is a primary target for the preventive management of glucose levels. Recent studies have sh ...

2025

The metabolic and circadian signatures of gestational diabetes in the postpartum period characterised using multiple wearable devices

Felix Naef, Marcel Salathé

Aims/hypothesis: Gestational diabetes mellitus (GDM) affects 14% of all pregnancies worldwide and is associated with cardiometabolic risk. We aimed to exploit high-resolution wearable device time-series data to create a fine-grained physiological character ...

2024

Privacy-preserving contact tracing curbed COVID

Marcel Salathé

Despite controversies over decentralized contact-tracing apps, the data now show that they saved thousands of lives during the pandemic. National and international authorities must heed the lessons. ...

NATURE PORTFOLIO2023

Food & You: A digital cohort on personalized nutrition

Laura Symul, Marcel Salathé, Rohan Singh

Nutrition is a key contributor to health. Recently, several studies have identified associations between factors such as microbiota composition and health-related responses to dietary intake, raising the potential of personalized nutritional recommendation ...

2023

Timeliness of online COVID-19 reports from official sources

Marcel Salathé

IntroductionMaking epidemiological indicators for COVID-19 publicly available through websites and social media can support public health experts in the near-real-time monitoring of the situation worldwide, and in the establishment of rapid response and pu ...

FRONTIERS MEDIA SA2023

Hits and Misses: Digital Contact Tracing in a Pandemic

Marcel Salathé

Traditional contact tracing is one of the most powerful weapons people have in the battle against a pandemic, especially when vaccines do not yet exist or do not afford complete protection from infection. But the effectiveness of contact tracing hinges on ...

SAGE PUBLICATIONS LTD2023

COVID-Twitter-BERT: A natural language processing model to analyse COVID-19 content on Twitter

Marcel Salathé, Martin Mathias Müller

IntroductionThis study presents COVID-Twitter-BERT (CT-BERT), a transformer-based model that is pre-trained on a large corpus of COVID-19 related Twitter messages. CT-BERT is specifically designed to be used on COVID-19 content, particularly from social me ...

2023

Dynamics of social media behavior before and after SARS-CoV-2 infection

Marcel Salathé

IntroductionOnline social media have been both a field of research and a source of data for research since the beginning of the COVID-19 pandemic. In this study, we aimed to determine how and whether the content of tweets by Twitter users reporting SARS-Co ...

FRONTIERS MEDIA SA2023

Associations Between Device-Measured Physical Activity and Glycemic Control and Variability Indices Under Free-Living Conditions

Marcel Salathé

Background: Disturbances of glycemic control and large glycemic variability have been associated with increased risk of type 2 diabetes in the general population as well as complications in people with diabetes. Long-term health benefits of physical activi ...

MARY ANN LIEBERT, INC2022

The Food Recognition Benchmark: Using Deep Learning to Recognize Food in Images

Marcel Salathé

The automatic recognition of food on images has numerous interesting applications, including nutritional tracking in medical cohorts. The problem has received significant research attention, but an ongoing public benchmark on non-biased (i.e., not scraped ...

FRONTIERS MEDIA SA2022

Deploying Decentralized, Privacy-Preserving Proximity Tracing

Jean-Pierre Hubaux, Sylvain Chatel, Edouard Bugnion, James Richard Larus, Marcel Salathé, Carmela González Troncoso, Wouter Lueks, Mathias Josef Payer, Apostolos Pyrgelis, Theresa Stadler

2022

Clusters of science and health related Twitter users become more isolated during the COVID-19 pandemic

Marcel Salathé, Martin Mathias Müller, Martin Müller

COVID-19 represents the most severe global crisis to date whose public conversation can be studied in real time. To do so, we use a data set of over 350 million tweets and retweets posted by over 26 million English speaking Twitter users from January 13 to ...

Nature Portfolio2021

Toward a Common Performance and Effectiveness Terminology for Digital Proximity Tracing Applications

Marcel Salathé, Carmela González Troncoso, Wouter Lueks

2021

Digital proximity tracing on empirical contact networks for pandemic control

Marcel Salathé

Digital contact tracing is a relevant tool to control infectious disease outbreaks, including the COVID-19 epidemic. Early work evaluating digital contact tracing omitted important features and heterogeneities of real-world contact patterns influencing con ...

Nature Research2021

CrowdNotifier: Decentralized Privacy-Preserving Presence Tracing

Edouard Bugnion, Marcel Salathé, Carmela González Troncoso, Wouter Lueks

There is growing evidence that SARS-CoV-2 can be transmitted beyond close proximity contacts, in particular in closed and crowded environments with insufficient ventilation. To help mitigation efforts, contact tracers need a way to notify those who were pr ...

2021

Supervised Learning Computer Vision Benchmark for Snake Species Identification From Photographs: Implications for Herpetology and Global Health

Marcel Salathé

We trained a computer vision algorithm to identify 45 species of snakes from photos and compared its performance to that of humans. Both human and algorithm performance is substantially better than randomly guessing (null probability of guessing correctly ...

FRONTIERS MEDIA SA2021

Keep calm and carry on vaccinating: Is anti-vaccination sentiment contributing to declining vaccine coverage in England?

Marcel Salathé, Martin Mathias Müller, Martin Müller

Background: In England, coverage for childhood vaccines have decreased since 2012/13 in the context of an increasingly visible anti-vaccination discourse. We determined whether anti-vaccination sentiment is the likely cause of this decline in coverage. Met ...

2020

A research agenda for digital proximity tracing apps

Edouard Bugnion, Marcel Salathé, Carmela González Troncoso, Theresa Stadler

E M H SWISS MEDICAL PUBLISHERS LTD2020

Early evidence of effectiveness of digital contact tracing for SARS-CoV-2 in Switzerland

Edouard Bugnion, James Richard Larus, Marcel Salathé, Carmela González Troncoso, Wouter Lueks, Mathias Josef Payer, Theresa Stadler, Daniele Antonioli

In the wake of the pandemic of coronavirus disease 2019 (COVID-19), contact tracing has become a key element of strategies to control the spread of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Given the rapid and intense spread of SARS-CoV ...

E M H SWISS MEDICAL PUBLISHERS LTD2020