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This chapter asks: How do COVID-19 conspiracy theories about Bill Gates work? In order to provide an answer, it analyses social media artefacts that make conspiratorial claims about Bill Gates such as the ones that he manufactured the virus, makes money from COVID-19 vaccines, plans to dominate the world and erect a dictatorship, and implants surveillance microchips into humans via COVID-19 vaccinations. The focus is on artefacts that have massively spread and have reached high visibility on social media and the Internet. A critical discourse analysis was conducted of this material.

The findings show that and how COVID-19 conspiracy theories construct the existence of a secret elite that dominates the world, use ideological strategies such as the personalisation of domination, the friend/enemy scheme, rational irrationality and logical determinism. COVID-19 conspiracy theories are a necrophilic ideology, an ideology of death that advances death and increases the number of deaths. This pandemic ideology tries to convince humans that vaccines are harmful and that COVID-19 is a hoax, whereby human misery is advanced. COVID-19 conspiracy theories are to a large degree a right-wing ideology.

This chapter presents a methodological and strategic proposal for the application of the design thinking methodology to support the implementation of the work and action plan for the economic reactivation of start-ups in Mexico. The objective is to create a quick reference guide to accelerate start-up resilience. Documentary research is considered on the guidelines and implementation requirements, as well as the measures established by the Mexican Ministry of Health, to mitigate the epidemic caused by the SARS-CoV-2 virus that causes the COVID-19 disease and to carry out an orderly, gradual, and cautious reopening in order to continue caring for people’s health in the working environment and at the same time reactivate the start-ups’ economy. This chapter provides an alternative guide to direct and propose a structured option for the labour and economic reactivation of start-ups that were considered non-core and that require the completion of regulatory procedures and processes required to obtain the necessary Quick Response code, granted by the entities that regulate the guidelines for the safe reopening of companies. Based on the size of these economic entities, it is considered that they can have between 1 and 10 employees, or no hired personnel at all, which is not considered a priority in the current economic reactivation programmes. A methodological strategy is proposed and implemented to support companies of this size in their immediate process of labour and economic reactivation for a case study of a service company that applied the proposed methodology.

This chapter deals with the question: What is a conspiracy theory? It provides a concept of conspiracy theories and situates conspiracy theories in the context of COVID-19.

In order to understand how COVID-19 conspiracy theories work, one requires a theoretical concept of conspiracy theories. The developed understanding is especially grounded in Frankfurt School critical theory. Section 2 of this chapter works out a critical theory concept of conspiracy theories. Section 3 is an introduction to the communication of COVID-19 conspiracy theories.

This chapter asks: How do Internet users react to COVID-19 conspiracy theories spread on social media? It presents the findings of a content analysis and critical discourse analysis of user comments collected from social media postings that advance COVID-19 conspiracy theories. A total of 2,847 comments made to seven social media postings whose authors support COVID-19 conspiracy theories were collected, coded and analysed.

The analysis shows the contested character of the communication of COVID-19 conspiracy theories and the role of the friend/enemy scheme, verbal attacks, violent threats, satire and humour in such communication processes.

Traditional epidemic models, like the classical SIR, are fitted to real data using deterministic optimization techniques. As a consequence, their performances cannot be properly assessed and, more importantly, the estimates of the critical epidemic parameters (which are of dramatic importance in monitoring the epidemic evolution) cannot be complemented with the calculation of confidence intervals. The aim of the present work is to remove such limitations and to compare the results obtained using two stochastic versions of deterministic SIR models. We describe the two alternatives and the associated estimation procedures, and we apply the two methodologies to a set of COVID-19 data observed in Italy in the 2020 pandemic wave. Our estimates of the basic reproduction number are comparable with the official sources, but using our methods uncertainty can also be properly assessed.

This chapter asks: How has Donald Trump communicated about COVID-19 on Twitter? How have conspiracy theories influenced his Twitter communication about COVID-19? Utilising critical discourse analysis, it analysed tweets in which Trump communicated about COVID-19 and showed that he used social media to spread conspiracy theories and fake news about COVID-19.

The findings show that Donald Trump uses social media such as Twitter for spreading far-right ideology, conspiracy theories and fake news. He makes use of a variety of linguistic ideological devices. In the context of COVID-19, Trump has spread a variety of conspiracy theories to his millions of followers, which has contributed to the intensification of risks and harms at the time of the worst global health crisis in 100 years.