The devastating effects of COVID-19 and the speed of both the scientific and medical response and the public information requirements about frontline healthcare work, medical advances and policy and compliance measures has necessitated an intensity of science communication never seen before. This JCOM special issue — the first of two parts — looks at the challenges of communicating COVID-19 and coronavirus in the early spread of the disease in 2020. Here we present papers from across the world that demonstrate the scale of this challenge.

Based on recent accounts of the sociology of expertise, we analyse the public contestation and expansion of expertise in the context of COVID-19. During the epidemic, the expertise of the Finnish Institute for Health and Welfare (THL), became increasingly contested. By exploring Twitter discussions concerning the actions of THL during the first months of the epidemic from January to mid-June 2020, we analyse the main motivations and arguments in this public contestation as well as the alternative forms of expertise proposed by the critics. We focus particularly on two forms of criticism arguing for what we call networked expertise: liberal crowdsourcing supporters and data-solutionists presenting alternative epidemiological models.

The novel coronavirus (COVID-19) which was first reported in China's Wuhan province in December 2019 became a global pandemic within a few months. The exponential rise in COVID-19 cases globally was accompanied by a spike in misinformation about the pandemic, particularly on social media. Employing Social Network Theory as a lens, this qualitative study explores how selected international celebrities appropriated their Twitter micro-blogging pages to announce their COVID-19 infection to the world. The study finds that these celebrities can take advantage of their huge social media following to counter disinfodemic and promote awareness about health pandemics.

This paper offers an ethnographic account of the editorial response to the COVID-19 outbreak by the Science Media Center Germany. Ethnographic research data was gathered during a 4-week fieldstay in January 2020 which coincided with the first weeks of the COVID-19 outbreak. The findings offer insights into how the editorial staff grappled with the scientific non-knowledge and uncertainty that marked the initial phase of the global COVID-19 outbreak, while simultaneously dealing with acute journalistic demands for expertise.

The onset of the COVID-19 pandemic has highlighted the criticality of science communication. Utilising a mixed-methods approach, this article takes an audience-focused perspective to analysing COVID-19 related social media posts on 23 popular South Pacific community Facebook pages over a four-month period across eight South Pacific countries. We analyse how audiences co-opt scientific terms, address information gaps and embed it in their lived experience. It is ascertained that online conversations around COVID-19 in the Pacific are intermeshed with both scientific fact and, personal accounts and rumours, referred to locally as ‘coconut wireless’, problematising established modes of empirical enquiry.

The emergence of COVID-19 represented a critical problem for the legitimacy and prestige of the Chinese Communist Party. The Chinese authorities had to fight not only to contain the spread of the virus but also to create a favorable public opinion about how they managed the crisis. Based on Foucault's approach to the “Regime of Truth”, this article analyzes the narrative surrounding the origin of the virus and how science was employed to lend it legitimacy. The article concludes by reviewing how the idea of science as a truth knowledge is used to construct a particular viewpoint, one focused on legitimizing the outbreak containment measures taken by the Chinese government.

Today, thanks to the consolidation of Internet, users have access to many sources of information on health issues. On social networks, there are profiles of health professionals who share content that generates credibility when published by specialists who are knowledgeable in the sector. These profiles include pharmaceutical professionals who disseminate and create content based on scientific knowledge. Pharmaceutical influencers on Instagram have an informative role on health, nutrition and cosmetic dermatology issues. This research aims to learn about the communication management of these influencers during the Coronavirus crisis in Spain and how they have modified their habitual discourse, as well as seeking to identify the formats of their publications that generate greater engagement and conversions among their followers.

The COVID-19 pandemic has impacted the world in ways not seen since the 1918–1920 Spanish Flu. Disinformation campaigns targeting health crisis communication during this pandemic seek to cripple the medical response to the novel coronavirus and instrumentalize the pandemic for political purposes. Propaganda from Russia and other factions is increasingly infiltrating public and social media in Ukraine. Still, scientific literature has only a limited amount of evidence of hybrid attacks and disinformation campaigns focusing on COVID-19 in Ukraine. We conducted a review to retrospectively examine reports of disinformation surrounding health crisis communication in Ukraine during the COVID-19 response. Based on the themes that emerged in the literature, our recommendations are twofold: 1) increase transparency with verified health crisis messaging and, 2) address the leadership gap in reliable regional information about COVID-19 resources and support in Ukraine.

Expert debates have become a popular form to inform the public about scientific issues. To deepen our knowledge about individuals who attend such formats and to investigate what they expect of the dissemination of science, this study analyzes the attendants of scientific expert debates and their expectations. Cluster analysis is applied to survey data (n=358) to explore whether distinct segments may be distinguishable within this supposedly homogeneous audience. Four different segments were identified and, overall, the findings indicate that attendants expect science communication to not only present scientific findings comprehensibly and from different perspectives, but also to create everyday life applicability, whereas interacting with scientists is of less interest.

A comprehensive treatise on science communication from the perspectives of scholars of multiple disciplines, this book contributes a unique compendium of virtually all fields of study that have something to say about the theory and practice of public engagement with science. It is an enriching companion for research, teaching and practice of science communication in all its forms.