A bacterial infection occurs when harmful bacteria invade the body, multiply, and disrupt normal bodily functions.
Bacterial Infection
Bacteria are microscopic single-celled organisms that can be beneficial (e.g., gut bacteria) or harmful. Harmful bacteria, also called pathogens, cause infections by releasing toxins or directly damaging tissues.
Common Types of Bacterial Infections
Respiratory Infections
Skin and Soft Tissue Infections
Urinary Tract Infections (UTIs
Gastrointestinal Infections
Sexually Transmitted Infections (STIs)
Blood Infections
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Viral Infection
A viral infection occurs when a virus enters the body, invades healthy cells, and uses them to reproduce, causing damage to tissues and triggering an immune response. Viruses are much smaller than bacteria and require a living host (human, animal, or plant cells) to replicate. Viral infections can range from mild (like the common cold) to severe (like HIV or Ebola).
Types of Viral Infections
Viral infections are categorized based on the area of the body they affect or the type of virus involved:
Respiratory Infections
Digestive System Infections
Skin Infections
Nervous System Infections
Systemic Viral Infections
Vector-Borne Infections
Fungal Infection
A fungal infection (also known as mycosis) occurs when fungi, microscopic organisms such as yeasts or molds, invade the body and grow in areas where they are not normally found. These infections can affect the skin, nails, hair, or internal organs. While many fungi are harmless and live naturally in the body, certain types can cause disease, especially in people with weakened immune systems.
Types of Fungal Infections
Fungal infections can be classified based on the area of the body they affect:
Superficial Fungal Infections
Mucosal Fungal Infections
Systemic Fungal Infections
Opportunistic Fungal Infections
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