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Biomedical Basics

Emerging infectious diseases and zoonoses

  • Created by Henry Stewart Talks
Published on March 31, 2026   4 min

A selection of talks on Microbiology

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This overview addresses emerging infectious diseases and zoonosis with particular emphasis on the definitions and significance of emerging infectious diseases, particularly the role of zoonoses and their drivers. We will discuss how environmental, societal, and global factors contribute to the rise and spread of these diseases. Key examples such as COVID 19, Ebola, and avian influenza, will illustrate these concepts and their impacts. Finally, we will explore prevention and control strategies, emphasizing surveillance, the one health approach, and the importance of coordinated public health efforts. Let's begin by defining emerging infectious diseases. These are infections that have newly appeared in a population or have existed, but are rapidly increasing in incidence or geographic range. Zoonosis are diseases naturally transmitted from animals to humans, including wildlife and domestic animals. Most emerging infectious diseases, over 70% by some estimates are zoonotic in origin. The causes are multifaceted, often involving environmental or societal changes and host pathogen dynamics. Interconnected factors drive the emergence and spread of infectious diseases worldwide. Urbanization leads to dense populations living close to livestock or wildlife. Global travel and trade can move pathogens globally within a short time. Environmental changes like deforestation or climate change, expand vector ranges. Intensive agriculture, wildlife trade,

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