Human migration is a dynamic, multifaceted and complex phenomenon shaped by economic, political, social, climatic and environmental factors [1], [2], [3], [4]. Migration refers to the relocation of individuals from their habitual residence to a new location, while travel involves journeying between destinations for various purposes [5]. In recent years, migration trends have been shaped by globalisation, technological advancements, climate change, armed conflicts, social and economic disparities and political and religious persecution. Migration poses challenges for individual nations and represents a crucial humanitarian and global health issue requiring coordinated international efforts and long-term planning [6], [7], [8].
According to the International Organization for Migration (IOM), more than 280 million people —approximately 3.6% of the world’s population— are international migrants (https://www.iom.int/fundamentals-migration
). This figure includes individuals who move voluntarily to seek better living opportunities and those forcibly displaced due to conflict, persecution, and environmental disasters. In addition, internal migration—people moving within their own countries—affects hundreds of millions more, particularly in large nations like China, India, and the United States of America (USA) [9], [10], [11].
Migration occurs for diverse reasons, primarily economic prospects, conflict, violence associated with political conflicts and political instability, climate change, and demographic factors. Many migrants leave their home countries searching for better employment and living conditions, particularly from developing nations to wealthier regions. Wars, repression, and human rights violations force millions to displace globally, with, most recently, the Syrian, Afghan, Venezuelan (Figure 1), and Ukrainian crises being among the most significant displacement events in recent history (https://www.taylorfrancis.com/chapters/edit/10.4324/9781003292548-50/united-nations-high-commissioner-refugees%E2%80%94unhcr-ileana-citaristi
).