In a few words, for those who are feeling pressed for time: Following the publication of a study by The Lancet concluding there are risks associated with the use of hydroxychloroquine or chloroquine in the treatment of covid-19, the World Health Organization (WHO) has suspended the international research it was conducting on the use of chloroquine. A few days later, more than 180 researchers and scientists signed a letter questioning the validity of the study, mainly from a methodological standpoint. To my mind, this shows two things: - the influence of the pharmaceutical industry, for whom the use of chloroquine can be seen as an obstacle to huge profits; - the challenges faced by developing countries aspiring for greater autonomy and the need for an appropriate response. For those who have suddenly found some free time, let's push on. 1. What exactly is this study about? The study sought to examine the effect of hydroxychloroquine and chloroquine, used with or without a macrolid...