
Streptococcus - Wikipedia
Streptococcus, from Ancient Greek στρεπτός (streptós), meaning "twisted", and κόκκος (kókkos), meaning "grain", is a genus of gram-positive spherical bacteria that belongs to the family …
Streptococcal Infections | Strep Throat | MedlinePlus
Jun 29, 2025 · Streptococcal is a type of bacteria that can cause strep throat (group A) or blood infections (group B). Learn how they can be prevented and treated.
Streptococcal Infections: Causes, Symptoms, and Treatment
Understanding Streptococcal infections Streptococcus is a genus of bacteria responsible for many human infections. Known for its diverse types and the array of diseases it can cause, …
Streptococcal Infections - Infectious Diseases - MSD Manual ...
Dec 24, 2021 · Streptococci are gram-positive aerobic organisms that cause many disorders, including pharyngitis, pneumonia, wound and skin infections, sepsis, and endocarditis. …
The Different Types of Streptococci (Strep Bacteria)
Oct 23, 2025 · There are several kinds of streptococci bacteria, causing problems ranging from a sore throat to life-threatening infections of the blood or organs. Learn how they vary and how …
Streptococcus | Definition, Species, & Disease | Britannica
Nov 12, 2025 · Streptococcus pneumoniaeScanning electron micrograph of Streptococcus pneumoniae. Streptococcus pneumoniae, also called pneumococcus, is an important human …
Streptococcus: Characteristics, Classification and Clinical ...
Streptococcus: Characteristics, Classification and Clinical Importance General Characteristics Streptococcus is a genus of Gram-positive, spherical bacteria (cocci) that typically arrange …
About Group A Strep Infection | Group A Strep | CDC
Jul 31, 2025 · Group A Streptococcus (group A strep bacteria) can cause many different infections. These infections range from minor to more serious. These bacteria can also cause …
Streptococcal Infections - Infections - Merck Manual Consumer ...
Streptococcal infections are caused by any one of several species of Streptococcus. These gram-positive, sphere-shaped (coccal) bacteria (see figure How Bacteria Shape Up) cause many …
Strep throat - Symptoms & causes - Mayo Clinic
Nov 30, 2022 · Strep throat is a bacterial infection that can make your throat feel sore and scratchy. Strep throat accounts for only a small portion of sore throats. If untreated, strep …