Michele Tizzani

ORCID: 0000-0003-3068-5111
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About
Contact & Profiles
Research Areas
  • Misinformation and Its Impacts
  • Vaccine Coverage and Hesitancy
  • Hate Speech and Cyberbullying Detection
  • COVID-19 and Mental Health
  • Opinion Dynamics and Social Influence
  • Complex Network Analysis Techniques
  • Social Media and Politics
  • Data Visualization and Analytics
  • COVID-19 epidemiological studies
  • Vector-Borne Animal Diseases
  • Animal Disease Management and Epidemiology
  • Media Studies and Communication
  • Agricultural risk and resilience
  • Digital Marketing and Social Media
  • Health and Conflict Studies
  • Data-Driven Disease Surveillance
  • COVID-19 Pandemic Impacts
  • Income, Poverty, and Inequality
  • Sentiment Analysis and Opinion Mining
  • Zoonotic diseases and public health
  • Viral Infections and Vectors
  • Climate Change Communication and Perception
  • Food Security and Health in Diverse Populations
  • Wikis in Education and Collaboration
  • Mental Health Research Topics

Institute for Scientific Interchange
2020-2024

ISI Foundation
2022

University of Parma
2018

Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Parma
2018

Background The exposure and consumption of information during epidemic outbreaks may alter people’s risk perception trigger behavioral changes, which can ultimately affect the evolution disease. It is thus utmost importance to map dissemination by mainstream media outlets public response this information. However, our understanding exposure-response dynamic COVID-19 pandemic still limited. Objective goal study characterize coverage collective internet in four countries: Italy, United...

10.2196/21597 article EN cc-by Journal of Medical Internet Research 2020-09-09

Abstract Hypergraphs naturally represent higher-order interactions, which persistently appear in social neural networks, and other natural systems. Although their importance is well recognized, a theoretical framework to describe general dynamical processes on hypergraphs not available yet. In this paper, we derive expressions for the stability of systems defined an arbitrary hypergraph. The allows us reveal that, near fixed point, relevant structure weighted graph-projection hypergraph that...

10.1038/s42005-021-00525-3 article EN cc-by Communications Physics 2021-02-12

Most countries have enacted some restrictions to reduce social contacts slow down disease transmission during the COVID-19 pandemic. For nearly two years, individuals likely also adopted new behaviours avoid pathogen exposure based on personal circumstances. We aimed understand way in which different factors affect - a critical step improving future pandemic responses.The analysis was repeated cross-sectional contact survey data collected standardized international study from 21 European...

10.1186/s12879-023-08214-y article EN cc-by BMC Infectious Diseases 2023-04-26

Most countries around the world enforced non-pharmaceutical interventions against COVID-19. Italy was one of first to be affected by pandemic, imposing a hard lockdown, in epidemic wave. During second wave, country implemented progressively restrictive tiers at regional level according weekly epidemiological risk assessments. This paper quantifies impact these restrictions on contacts and reproduction number.Representative (with respect age, sex, region residence) longitudinal surveys...

10.1186/s12889-023-15846-x article EN cc-by BMC Public Health 2023-05-19

Time-varying network topologies can deeply influence dynamical processes mediated by them. Memory effects in the pattern of interactions among individuals are also known to affect how diffusive and spreading phenomena take place. In this paper we analyze combined effect these two ingredients on epidemic dynamics networks. We study susceptible-infected-susceptible (SIS) susceptible-infected-removed (SIR) models recently introduced activity-driven networks with memory. By means an...

10.1103/physreve.98.062315 article EN Physical review. E 2018-12-18

Antivaccination views pervade online social media, fueling distrust in scientific expertise and increasing the number of vaccine-hesitant individuals. Although previous studies focused on specific countries, COVID-19 pandemic has brought vaccination discourse worldwide, underpinning need to tackle low-credible information flows a global scale design effective countermeasures.This study aimed quantify cross-border misinformation among users exposed antivaccination (no-vax) content effects...

10.2196/44714 article EN cc-by JMIR Infodemiology 2023-05-24

Collective and individual action necessary to address climate change hinges on the public's understanding of relevant scientific findings. In this study, we examine use sources in course 14 years public deliberation around one largest social media platforms, Reddit. We find that only 4.0% links Reddit posts, 6.5% comments, point domains sources, although these rates have been increasing past decades. These are dwarfed, however, by citations mass media, newspapers, latter which peaked...

10.48550/arxiv.2502.05026 preprint EN arXiv (Cornell University) 2025-02-07

Well-informed collective and individual action necessary to address climate change hinges on the public’s understanding of relevant scientific findings. Social media has been a popular platform for deliberation around policies aimed at addressing it. Whether such is informed by findings an important step in gauging awareness resources their latest In this study, we examine use sources course 14 years public one largest social platforms, Reddit. We find that only 4.0% links Reddit posts, 6.5%...

10.1371/journal.pclm.0000541 article EN cc-by PLOS Climate 2025-05-07

Italy was the first European country to be hit by COVID-19 in early 2020, since then losing over 100,000 people disease. By end of vaccination campaign 2021, 81% public received at least one dose. These dramatic developments were accompanied a rigorous discussion around vaccination, both about its urgency and possible negative effects. Twitter is most popular social media platforms country, but pre-pandemic debate has been shown polarized siloed into echo chambers. It thus imperative...

10.1609/icwsm.v16i1.19276 article EN Proceedings of the International AAAI Conference on Web and Social Media 2022-05-31

The exposure and consumption of information during epidemic outbreaks may alter risk perception, trigger behavioural changes, ultimately affect the evolution disease. It is thus uttermost importance to map dissemination by mainstream media outlets public response. However, our understanding this exposure-response dynamic COVID-19 pandemic still limited. In paper, we provide a characterization coverage online collective attention in four countries: Italy, United Kingdom, States, Canada. For...

10.48550/arxiv.2006.06446 preprint EN other-oa arXiv (Cornell University) 2020-01-01

Food security is recognized as an inherent human right, enshrined within the principles of Agenda 2030. The Global Report Crises 2022 points out 193 million people facing severe food insecurity across 53 countries, posing challenges to decision-makers and institutions. Among many causes crises, violent conflict, economic shocks, environmental pressures are most influential. In this work, we focus primarily on conflict-related domain. Finding a stable relationship between conflict complex for...

10.3389/fsufs.2023.1239992 article EN cc-by Frontiers in Sustainable Food Systems 2023-10-12

<sec> <title>BACKGROUND</title> The exposure and consumption of information during epidemic outbreaks may alter people’s risk perception trigger behavioral changes, which can ultimately affect the evolution disease. It is thus utmost importance to map dissemination by mainstream media outlets public response this information. However, our understanding exposure-response dynamic COVID-19 pandemic still limited. </sec> <title>OBJECTIVE</title> goal study characterize coverage collective...

10.2196/preprints.21597 preprint EN cc-by 2020-06-19

SARS-CoV-2 has clearly shown that efficient management of infectious diseases requires a top-down approach which must be complemented with bottom-up response to effective. Here we investigate novel surveillance for transboundary animal using African Swine (ASF) fever as model. We collected data both at population level and the local on information-seeking behavior respectively through digital targeted questionnaire-based surveys relevant stakeholders such pig farmers veterinary authorities....

10.1371/journal.pone.0252972 article EN cc-by PLoS ONE 2021-12-31

Over the last few years, content verification through reliable sources has become a fundamental need to combat disinformation. Here, we present language-agnostic model designed assess reliability of across multiple language editions Wikipedia. Utilizing editorial activity data, evaluates source within different articles varying controversiality such as Climate Change, COVID-19, History, Media, and Biology topics. Crafting features that express domain usage articles, effectively predicts...

10.48550/arxiv.2410.18803 preprint EN arXiv (Cornell University) 2024-10-24

Abstract Background: The COVID-19 pandemic has significantly affected social contact patterns worldwide. Particularly during the first epidemic wave, because of lack specific treatment or vaccine, most countries around world enforced non-pharmaceutical interventions. Italy was one to be strongly by pandemic, imposing in wave a hard lockdown. During second country implemented color-coded, progressively restrictive tiers at regional level according weekly epidemiological risk assessments....

10.21203/rs.3.rs-1892693/v1 preprint EN cc-by Research Square (Research Square) 2022-08-23

Abstract The SARS-CoV-2 pandemic has unveiled the importance of stakeholders and ordinary citizens in managing infectious disease emergencies. Efficient management diseases requires a top-down approach which must be complemented with bottom-up response to effective. Here we investigate novel surveillance for transboundary animal using African Swine fever as model. We were able collect data at population level on information-seeking behavior local through targeted questionnaire-based survey...

10.1101/2021.05.27.445948 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2021-05-27

At the beginning of COVID-19 pandemic, fears grew that making vaccination a political (instead public health) issue may impact efficacy this life-saving intervention, spurring spread vaccine-hesitant content. In study, we examine whether there is relationship between interest social media users and their exposure to content on Twitter. We focus 17 European countries using multilingual, longitudinal dataset tweets spanning period before COVID, up vaccine roll-out. find that, in most...

10.48550/arxiv.2309.03078 preprint EN cc-by arXiv (Cornell University) 2023-01-01

Hypergraphs naturally represent higher-order interactions, which persistently appear from social interactions to neural networks and other natural systems. Although their importance is well recognized, a theoretical framework describe general dynamical processes on hypergraphs not available yet. In this paper, we bridge gap derive expressions for the stability of systems defined an arbitrary hypergraph. The allows us reveal that, near fixed point, relevant structure graph-projection...

10.48550/arxiv.2005.10891 preprint EN other-oa arXiv (Cornell University) 2020-01-01

Twitter is one of the most popular social media platforms in country, but pre-pandemic vaccination debate has been shown to be polarized and siloed into echo chambers. It thus imperative understand nature this discourse, with a specific focus on hesitant individuals, whose healthcare decisions may affect their communities country at large. In study we ask, how Italian discussion around changed during COVID-19 pandemic, have unprecedented events 2020-2021 able break chamber topic? We use...

10.48550/arxiv.2204.12943 preprint EN cc-by-nc-nd arXiv (Cornell University) 2022-01-01

Anti-vaccination views pervade online social media, fueling distrust in scientific expertise and increasing vaccine-hesitant individuals. While previous studies focused on specific countries, the COVID-19 pandemic brought vaccination discourse worldwide, underpinning need to tackle low-credible information flows a global scale design effective countermeasures. Here, we leverage 316 million vaccine-related Twitter messages 18 languages, from October 2019 March 2021, quantify misinformation...

10.48550/arxiv.2211.11495 preprint EN cc-by arXiv (Cornell University) 2022-01-01

<sec> <title>BACKGROUND</title> Antivaccination views pervade online social media, fueling distrust in scientific expertise and increasing the number of vaccine-hesitant individuals. Although previous studies focused on specific countries, COVID-19 pandemic has brought vaccination discourse worldwide, underpinning need to tackle low-credible information flows a global scale design effective countermeasures. </sec> <title>OBJECTIVE</title> This study aimed quantify cross-border misinformation...

10.2196/preprints.44714 preprint EN 2022-11-30
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