Published with the kind permission of the author
The first wave of COVID-19 passed through most of the developed countries, including Russia, in March-June 2020. China dealt with it earlier, in January-March, the United States in general, as well. Brazil, India, and many developing countries got hit by this wave later and, apparently, are still facing it, in September. The characteristics of the First Wave are clear: it is sudden, health systems are unprepared in many countries for such a shock, it is transferred from country to country by tourists, and it deals a blow to the elderly and areas with a high concentration of poor people.