World epidemics that have hit various countries throughout history have often been caused by dangerous pathogens, such as viruses and bacteria. To understand this phenomenon, we need to identify some of the main causes of outbreaks. First, human interactions with nature, such as deforestation and urbanization, often bring humans and animals carrying pathogens closer to each other. For example, hunting wild animals results in the transmission of viruses from animals to humans. Second, globalization plays an important role in the spread of the epidemic. With increased mobility of people and goods, pathogens can spread rapidly across countries. The COVID-19 virus that broke out in early 2020 is a clear example that shows how quickly a disease can spread through international travel. In this context, the importance of early detection systems and rapid response by global health authorities is strongly emphasized. Third, climate change also contributes to the emergence of new outbreaks. Changes in temperature and weather patterns can affect the habitat of disease vectors such as mosquitoes and ticks which carry dangerous viruses and bacteria. For example, Zika and dengue viruses are increasingly common in previously unaffected areas, fueled by global warming. The impact of the world epidemic is very broad and varied. The health impact is clearly visible with increasing death rates, overburdened health systems, and increasing cases of chronic diseases resulting from the post-outbreak. Social instability arises as a result of job loss, interrupted education, and limited mobility. A study shows that more than 1.5 million jobs were lost worldwide during the COVID-19 pandemic. The economic impact cannot be ignored either. Many countries are experiencing recession due to the uncertainty created by the outbreak. The collapse of global supply lines as well as a decline in consumer demand created a crisis in many sectors. Countries with weak economies experience severe losses, resulting in increased poverty rates and political instability. From a psychological aspect, outbreaks can trigger anxiety and stress in society. Social isolation, loss of loved ones, and uncertainty about the future can lead to a spike in mental health problems. During an outbreak, many people experience anxiety disorders, depression, and other mental health problems, which can persist long after the outbreak has subsided. Overall, recognizing the causes and impacts of global outbreaks is an important step to prevent and mitigate their effects in the future. Collaborative efforts from various countries, in-depth research, and public education about health can be the key to facing this challenge.