This study considers the effects of the COVID-19 pandemic and the global health crisis caused on tourism marketing strategies internationally. The marketing strategies proposed and implemented by international tourism business community are described, in order to deal with the health crisis and to recover the global tourism movement. The general concepts of the research and the methodological tools are listed, with which the present study was conducted and which focused on the application of systems science in information management. Finally, the above strategies are evaluated from the perspective of systems science.