Tonsils, which can be seen in the throat of any person (in common parlance — the tonsils) are a component of the protective system of the upper respiratory tract. This part of the pharyngeal lymphoid ring which also includes lingual tonsil, adenoids and others. Their role — a delay of harmful microorganisms from penetrating into the bronchi and lungs. In some people, there is hypertrophy of the tonsils, but more often it means chronic infection.
In the throat of healthy human inhabited by many bacteria, the so-called symbionts or saprophytes. Under normal conditions they do not cause disease, but supercooling or other weakened immunity may cause cause inflammation: tonsillitis, pharyngitis, laryngitis, etc.
Due to the fact that the tonsils are in the path of infection, they may suffer from various microorganisms — those trying to penetrate further into the throat and lungs.
Most cases of acute tonsillitis and pharyngitis caused by viruses. Most often, this adenovirus, rhinovirus, corona-virus, respiratory syncytial virus. Sore throat can also cause Epstein-Barr virus, virus herpes, cytomegalovirus.
Bacterial anginavstrechaetsya 15 — 30%, and most of them cause a hemolytic streptococcus (It was his "portrait" is shown in the pictures). It is transmitted from person to person through airborne droplets, so that the patient streptococcal sore throat is contagious. Antibodies raised against hemolytic streptococci may be harmful for the body's own — that is the danger of the infection.
Corynebacterium diphtheriae — bacillus that causes diphtheria, also affects the throat, and in the early days of the disease is similar to angina. To eliminate diphtheria throat swab is taken.
Gonococcus— Can cause angina in sexually active individuals in contact with gonorrhea in the oral cavity.
In rare cases, angina may cause and other bacteria: Mycoplasma pneumoniae, Chlamydia pneumoniae, Arcanobacterium haemolyticum and others.
Some people can tolerate hemolytic streptococcus, but you yourself are not ill.
This condition is called asymptomatic carrier state, streptococcus they found in the survey in smears from the throat. Antibodies with acute phase absent, ie total reaction to bacteria is not. The most common carriers of Streptococcus are children from 3 to 14 years. In children's groups in the percentage of carriers season incidence can reach 10 — 15%.
The number of bacteria in the throat is small and the carriers are usually not harmful to the surrounding, and to the media itself. After a while (sometimes up to 6 — 12 months). Carriage passes by itself. According to the latest recommendations, most of these people do not require treatment.
A special case is a viral tonsillitis in the media streptococcus. In the tests and analyzes can be detected a positive response to streptococcus, although the disease is caused not by him but by a virus.