Is mycoplasma infection in children contagious? Mycoplasma infection is a type of respiratory pathogen. It is generally transmitted through coughing and sneezing, directly via the upper respiratory tract, and can be contagious through close contact at short distances. Therefore, mycoplasma is contagious and has infectious properties. However, it is not classified as a communicable disease and its infectiousness is relatively weak compared to others. It is mainly transmitted through the respiratory tract, and everyday activities such as drinking and eating do not spread the infection.