In England and Wales disease due to toxoplasmosis is reported relatively rarely. However, as symptoms in healthy people are generally mild and non-specific, a significant proportion of cases probably go unnoticed. Studies have estimated that between 7-34% of people in the UK have been infected with T. gondii, however, the vast majority of these people will not have noticed any symptoms.
The Health Protection Agency, in collaboration with the National Public Health Service for Wales, is currently reviewing the number of cases of Toxoplasma gondii infection diagnosed by the Toxoplasma Reference Unit in Swansea.