Are Mycoplasma pneumoniae and mycoplasmas the same? The answer is of course that there are differences. The concept of mycoplasma is quite broad. Mycoplasma, also known as Mollicutes, represents the smallest and simplest of known prokaryotes. There are many types of mycoplasma, and they exist widely in nature. Currently, more than eighty types have been identified, but the most common ones related to human diseases are four types, among which Mycoplasma pneumoniae is the most common. It can cause pulmonary infections. Apart from the common Mycoplasma pneumoniae that causes pulmonary infections, there are other types that can also cause human diseases, such as human mycoplasma, genital mycoplasma, etc. Other types of mycoplasmas primarily cause infections in the urinary or reproductive tracts.