Overview of Infectious Diseases
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Overview of Infectious Diseases Infectious diseases are caused by microorganisms such as bacteria, viruses, fungi, and parasites that enter the body and disrupt normal bodily functions. These pathogens can be transmitted through various means, including direct contact with infected individuals, contaminated food or water, insect bites, or exposure to environmental sources like soil. Infectious diseases have been a major factor in global health challenges, causing a significant burden on public health, economies, and societies worldwide. Types of Infectious Diseases Bacterial Infections : These are caused by harmful bacteria that multiply in the body. Examples include tuberculosis (TB), pneumonia, and urinary tract infections (UTIs). Some bacteria, like Streptococcus or Staphylococcus , are normally found in the human body but can become pathogenic under certain conditions. Antibiotics are commonly used to treat bacterial infections, though antibiotic resistance is an emerging co...