streptokokkeryhmät
Streptokokkeryhmät, often referred to as streptococci, are a genus of Gram-positive, spherical bacteria. They are known for their tendency to form chains or pairs, a characteristic that gives them their name, derived from the Greek word "streptos" meaning twisted. These bacteria are ubiquitous in nature and are commonly found in the oral cavity, gastrointestinal tract, and on the skin of humans and animals. While many streptococci are harmless commensals, some species are significant human pathogens, causing a wide range of infections.
Streptococci are often classified into groups based on specific carbohydrate antigens in their cell walls, known