Multilingual crisis communication has emerged as a global challenge during the COVID-19 pandemic. Global public health communication is characterized by the large-scale exclusion of linguistic minorities from timely high-quality information. The severe limitations of multilingual crisis communication that the COVID-19 crisis has laid bare result from the dominance of English-centric global mass communication; the longstanding devaluation of minoritized languages; and the failure to consider the importance of multilingual repertoires for building trust and resilient communities. These challenges, along with possible solutions, are explored in greater detail by the articles brought together in this special issue, which present case studies from China and the global Chinese diaspora. As such, the special issue constitutes not only an exploration of the sociolinguistics of the COVID-19 crisis but also a concerted effort to open a space for intercultural dialogue within sociolinguistics. We close by contending that, in order to learn lessons from COVID-19 and to be better prepared for future crises, sociolinguistics needs to include local knowledges and grassroots practices not only as objects of investigation but in its epistemologies; needs to diversify its knowledge base and the academic voices producing that knowledge base; and needs to re-enter dialogue with policy makers and activists.

Translation is an important means of enabling access to information in an emergency response. Increasingly, volunteer translators have been using social media platforms to self-organize and carry out urgent translation tasks that effectively complement official disaster relief efforts. However, the role of crowdsourced translations and the capacity of volunteer translators in reducing the impact of disasters remain underestimated and therefore understudied. Based on semi-structured interviews with five volunteer translators and online observation of their translation practices, this study investigates the role of a volunteer-driven crowdsourced translation effort in facilitating the donation and procurement of medical supplies between Wuhan and the world. By addressing the real challenges of urgent crisis communication in Wuhan in the early stages of the pandemic, this study draws attention to the need to integrate information and communication technologies with multilingual resources for disaster relief. In addition, it calls for the inclusion of multilingual logistics in national emergency preparation, response and recovery plans.

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Antibacterial peptide, CM4 (ABP-CM4), a 35 amino acid peptide from Chinese silkworm-Bombyx mori, displayed a strong antifungal activity against Aspergillus niger, Trichoderma viride and Gibberella saubinetii. Scanning electron microcopy showed that the morphology of conidia became more irregular and swelled when treated with ABP-CM4 at its minimal inhibitory concentration (MIC) of 8 muM. A cell wall regeneration assay indicated that the plasma membrane was the prime target of ABP-CM4 action. Confocal laser scanning microscopy showed that the cytoskeleton of A. niger was destroyed when treated with ABP-CM4 at 8 muM. Furthermore, transmission electron microscopy showed that the membrane and the cellular organelles of fungus were disrupted and there were many vacuoles in the fungal cellular space after the treatment with ABP-CM4. A gel-retardation assay showed that ABP-CM4 bound the DNA of A. niger. Our results suggest that ABP-CM4 exerts its antifungal activity by disrupting the structure of cell membranes and the cytoskeleton and interacts with the organelles, such as the mitochondrion and with the DNA in the fungal cell, subsequently resulting in cell death.

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