That's an average of 67 different kinds per belly button. Now, many of those microbes aren't unique to belly buttons, like staphylococcus, which can lead to staph infections. It shows up in noses ...

The team of researchers sequenced small fragments of each microbe’s genome to identify the diversity of microbes in each belly button. Each volunteer harbored an average of 67 different types of ...

An infected belly button piercing causes swelling, pus, fever, chills, and even an upset stomach. If the belly button piercing is infected keep it in and clean the area with antibacterial soap.