Infections are caused by infectious agents (pathogens) including:
• Bacteria (e.g. Mycobacterium tuberculosis See more

There is a general chain of events that applies to infections, sometimes called the chain of infection or transmission chain. The chain of events … See more

Techniques like hand washing, wearing gowns, and wearing face masks can help prevent infections from being passed from one person to another. Aseptic technique was introduced in … See more

Pandemics such as COVID-19 show that people dramatically differ in their susceptibility to infection. This may be because of general health, age, or their immune status, e.g. when they have been infected previously. However, it also has become clear that … See more

The signs and symptoms of an infection depend on the type of disease. Some signs of infection affect the whole body generally, such as See more

Diagnosis of infectious disease sometimes involves identifying an infectious agent either directly or indirectly. In practice most minor infectious … See more

When infection attacks the body, anti-infective drugs can suppress the infection. Several broad types of anti-infective drugs exist, depending on the type of organism targeted; they include antibacterial (antibiotic; including antitubercular), antiviral See more