In today's interconnected world, global health faces a range of pressing threats that demand thorough understanding and effective mitigation. Epidemiology and its related sciences play a pivotal role in identifying, analyzing, and addressing these challenges by the consecution of timely and effective public policies.

Costa Rica’s geographical location in the middle of the continent, bathed by two main oceans and endowed with plenty of sweet water resources, provides to the country the status of “biological filter” encompassing wildlife species from both North and South America and harboring many migratory birds and sea animals.

This internationally recognized high biodiversity represents both an advantage and a challenge when it comes to fighting global threats. This fascinating topic will be explored in depth as part of the Study Abroad Learning Experience for students visiting Costa Rica.

Global health security also faces threats from antimicrobial resistance (AMR). Overuse and misuse of antibiotics have led to the evolution of drug-resistant pathogens, making infections harder to treat and increasing mortality rates. Epidemiology's role in tracking resistant strains, understanding the dynamics of resistance development, and guiding prudent antibiotic use is crucial in preserving the effectiveness of our antimicrobial arsenal. In Costa Rica, students will have the opportunity to learn how to fight AMR from the farm level and above, all as part of the Study Abroad Learning Experience.

Environmental changes and climate-related events have far-reaching health implications as well. From extreme weather events to air and water pollution, these factors contribute to a range of health challenges. Epidemiologists assess the health impacts of environmental changes, helping policymakers make informed decisions to safeguard public health and mitigate risks.

Furthermore, health disparities persist across the globe, with marginalized communities often bearing the brunt of poor health outcomes. Epidemiology uncovers the social determinants of health, shedding light on the root causes of disparities. This knowledge is essential for designing equitable healthcare policies and interventions that address systemic inequalities.