Staphylococcus is a type of bacteria that can be found on the skin and in the noses of many healthy people. While most strains are harmless, some can cause infections, especially if they enter the body through cuts or wounds. These infections can range from mild skin issues, like pimples, to more serious conditions, such as pneumonia or bloodstream infections. One of the most well-known strains is Staphylococcus aureus, which can lead to food poisoning and other illnesses. Good hygiene practices, like washing hands regularly, can help prevent the spread of these bacteria and reduce the risk of infection.