Gram-positive coccal infections

Gram-positive bacterial infections are relatively common in our daily lives and pose a great threat to human health. Gram-positive cocci are a relatively widespread species of bacteria, among which Staphylococcus aureus, Streptococcus pyogenes, etc. all belong to the range of Gram-positive bacteria. When the body's immunity deteriorates, it may lead to the onset of disease, which has a relatively large impact on human health.

Staphylococci are widely distributed in the air, water, feed, and the surface of objects. It also parasitizes the skin, mucous membranes, intestines, respiratory tract, and mammary glands of humans and livestock, and is named so because it often accumulates in the shape of grape clusters. Most of them are non-pathogenic bacteria, and a few can cause suppurative diseases, sepsis, septicemia, contaminate food, and cause food poisoning.

Streptococcus Streptococcus is a member of the Streptococcus family. It is a round or oval Gram-positive bacterium arranged in groups or chains; it generally has no spores and no flagella. Some can produce capsules, are catalase negative, and catalase negative; they have high nutritional requirements and ferment sugars to produce acid but not gas; the G+C content of DNA is 33% to 42%.

Streptococcus pyogenes Streptococcus pyogenes is widely distributed in nature. It can exist on the skin, mucous membranes and hair of humans and animals, and when the opportunity arises, it can invade the body and cause traumatic infection and various diseases. Streptococcus pyogenes is primarily a human pathogen. It often causes suppurative inflammation, tonsillitis, scarlet fever, etc. in humans. Among livestock, it mainly causes mastitis in cattle. Some strains are pathogenic to rabbits and mice.

Definition of cocci

Cocci are a large class of bacteria. Pathogenic cocci that are pathogenic to animals and humans mainly cause purulent inflammation. They are also called pyogenic cocci. They are divided into Gram-positive cocci and Gram-negative cocci according to their staining characteristics. Of clinical importance in veterinary medicine are Gram-positive cocci. Gram-positive bacteria mainly include Staphylococcus, Streptococcus, and Pneumococcus