Bacteria of the genus Streptococci play an important role in both disease and disease prevention. Because some species of streptococci cause disease when they begin to dominate. In this scenario, such streptococcal species are quite aggressive and can cause fatal infections. A number of strains are now resistant to antibiotics.

Other streptococcal species and strains colonize the mouth, nose and throat, as well as the intestines and other areas of the body. They also produce a variety of bacteriocides that act like antibiotics and repel and kill other microorganisms. Below we will focus primarily on the two predominant and related species, Streptococcus salivarius and Streptococcus thermophilus.

These bacteria are vital probiotic bacteria that locate throughout the entire upper respiratory tract, but especially in the oral cavity and throat. They are the main and most aggressive probiotic bacteria in the oral cavity. They defend their habitat very intensively and produce various antibiotics, such as Salivarizin A and Salivarizin B, in addition to numerous other antibiotic substances.
They are also permanently present in the human body. We got our permanent trunks from our mother. It transmits its persistent strains through birth as well as through breast milk and kissing, with kisses and breast milk probably being the main routes. Streptococcus salivarius is extremely aggressive and is the predominant type of bacteria in a healthy mouth. This means that Streptococcus salivarius acts as a manager, so to speak. For this purpose, the bacteria produce numerous enzymes and acids that control the reproduction of other bacteria. One might conclude that the Streptococcus salivarius bacteria are among the most important bacteria in maintaining the body's health because they are the main gatekeepers in preventing the entry and survival of infectious microorganisms. As mentioned above, Streptococcus salivarius does this primarily by producing salivaricins, which are considered one of the most effective groups of antibiotics. Although Salivarizin A and Salivarizin B have been isolated, it is certain that the bacterium constantly modifies its antibiotic biochemical substances in order to adapt to new infectious agents and their respective weaknesses.

According to clinical studies in humans, Streptococcus salivarius has been shown to:

• Reduce dental plaque
• Reduce tooth decay
• Inhibit gum inflammation
• Strengthen the immune system in the mouth and throat