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Biomedical Basics

Infectious diseases

  • Created by Henry Stewart Talks
Published on November 30, 2025   5 min

A selection of talks on Microbiology

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This presentation will examine Infectious Diseases, with a focus on the origins and impact of infectious diseases, the microorganisms responsible, and how they spread through various routes such as air, water, and vectors. We will discuss the importance of accurate diagnosis, modern laboratory techniques, and the role of prevention strategies like vaccination and sanitation. The lecture will also address treatment approaches, including the challenge of antimicrobial resistance. Finally, we will highlight why understanding infectious diseases is essential for global health management and policy.. Infectious diseases remain a leading cause of illness and death worldwide, having shaped human history and society. They are caused by microorganisms such as bacteria, viruses, fungi, and parasites, each inducing disease through distinct mechanisms. Not all infectious agents cause symptoms— some people carry microorganisms without illness, serving as reservoirs. Understanding these causes is essential for clinical management, control, prevention, and the development of effective global health policies. Infectious diseases spread through various routes. Respiratory illnesses like influenza transmit via airborne droplets, while gastrointestinal conditions from Salmonella or Giardia follow the faecal-oral route. Vector-borne diseases are transmitted by vectors such as mosquitoes, which spread malaria and dengue. Sexual contact and contaminated objects are also key transmission routes.

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