Which type of bacteria is known for causing diseases?

Pathogenic bacteria are the type known for causing diseases in humans, animals, and plants. These microorganisms have evolved specific mechanisms that allow them to invade host tissues, evade the immune system, and produce toxins that can harm the host. Examples include bacteria such as Salmonella, which can lead to food poisoning, and Streptococcus, which can cause strep throat.

Nonpathogenic bacteria, harmless bacteria, and beneficial bacteria typically do not cause diseases. In fact, many of them play crucial roles in processes like digestion, nutrient cycling, and maintaining health within ecosystems. Nonpathogenic bacteria are often used in fermentation and other biotechnological applications, while beneficial bacteria can contribute to gut health in humans. Understanding the distinction between pathogenic and nonpathogenic bacteria is essential in sanitation and disinfection practices to ensure the safety and health of individuals in various environments.