 Other historians have disputed the idea that there was a deliberate release of smallpox virus and/or suggest that it arrived with visitors to Australia other than the First Fleet.It has been suggested that live smallpox virus may have been introduced accidentally when Aboriginal people came into contact with variolous matter brought by the First Fleet for use in anti-smallpox inoculations.In 2002, historian Judy Campbell offered a further theory, that smallpox had arrived in Australia through contact with fishermen from Makassar in Indonesia, where smallpox was endemic.