For active immunisation of piglets from 7 days of age to reduce lung lesions related to infection by Mycoplasma hyopneumoniae in fattening pigs. The onset of immunity is within two weeks after vaccination. A duration of immunity of at least 25 weeks has been demonstrated.

In more detailed studies in piglets from three weeks of age, vaccination has also been shown to reduce coughing and losses in weight gain related to infection by Mycoplasma hyopneumoniae in fattening animals. In these studies, onset of immunity three weeks after vaccination and a duration of immunity of at least 23 weeks were demonstrated; periods shorter than three weeks of age or longer than 23 weeks were not tested.