Group A Streptococci Infection

There are specific questions such as "How do you spread," "How do you get it?" And many questions from many people. In some cases, group A streptococci are transmitted indirectly or in direct contact in a variety of ways. Group A Streptococcus (GAS) organisms are usually transmitted by direct human - to - human transmission. Occasionally, they can spread by droplets or people exposed to items recently handled by infected people. Indirect contacts can not contact individuals, but they may be transmitted in the air.

Group H Streptococcus caused infection in medium size dogs. Group H streptococcus rarely causes disease, unless the human comes into direct contact with the mouth of the dog. One of the most common ways to spread the infection is mouth-to-mouth between a person and a dog. However, dogs can crush human hands and spread infections. Streptococci are divided into six groups according to their 16S rDNA sequence: S. anginosus, S. bovis, S. mitis, Streptococcus mutans, Streptococcus pyogenes and Streptococcus salivarius. The 16S group has been confirmed by whole genome sequencing (see figure). Important pathogens, Streptococcus pneumoniae and S. pyogenes belong to each group of S. mitis and S. pyogenes, while the causative agents of caries, Streptococcus mutans are the basis of the streptococci group.

In humans, streptococcal related diseases occur primarily in the respiratory tract, blood flow or skin infections. Human diseases are most often associated with group A streptococci. The most common forms of acute group A streptococcal infections are respiratory infections (sore throat or tonsillitis) or skin infections (moth worms). Also, medically important is late immunization sequelae, not attributable to direct bacterial infection, group A infection (rheumatic fever after respiratory infection, and glomerular nephritis after respiratory infection or skin infection) There is a question. Efforts have been made to clarify the risks and mechanisms of these sequelae and to identify strains of rheumatism and nephritis. Streptococcus pneumonia is still a major cause of severe focal and systemic infections, the most common cause of community infectious pneumonia in the United States and fatal bacterial pneumonia in developing countries.