Several factors can influence epidemic trends, including: - Pathogen characteristics: The virulence, mode of transmission, and mutation rate of a pathogen can significantly affect how an epidemic develops. - Population behavior: Human behaviors, such as social distancing, hand hygiene, and vaccination uptake, can influence the spread of disease. - Environmental factors: Climate change, urbanization, and deforestation can create conditions that facilitate the spread of infectious diseases. - Public health interventions: Policies, healthcare infrastructure, and availability of medical resources play crucial roles in controlling epidemics.