Infectious Disease Fundamentals

📋 Course Outline

1. Infectious Disease Types
2. Transmission Routes
3. Immune Response Components
4. Antibiotic Mechanisms
5. Antibiotic Resistance
6. Major Infectious Diseases
7. Vaccination Strategies
8. Future Disease Management

📖 1. Infectious Disease Types

🔑 Key Concepts & Definitions

• Pathogen: A microorganism (bacteria, virus, fungi, or parasite) capable of causing disease in a host.
• Bacteria: Single-celled prokaryotic organisms that can be pathogenic or beneficial; cause diseases like pneumonia and food poisoning.
• Virus: A non-cellular infectious agent that requires a host cell to replicate; causes illnesses such as influenza and HIV.
• Fungi: Eukaryotic organisms, including yeasts and molds, that can cause infections like candidiasis and aspergillosis.
• Parasites: Organisms that live on or inside a host, deriving nutrients at the host's expense; examples include Plasmodium (malaria) and Giardia.
• Zoonosis: An infectious disease transmitted from animals to humans, accounting for a significant portion of emerging infections.

📝 Essential Points