The seroprevalence of "T. gondii" in domestic cats, worldwide has been estimated to be around 30–40% and exhibits significant geographical variation. In the United States, no official national estimate has been made, but local surveys have shown levels varying between 16% and 80%. A 2012 survey of 445 purebred pet cats and 45 shelter cats in Finland found an overall seroprevalence of 48.4%, while a 2010 survey of feral cats from Giza, Egypt found a seroprevalence rate of 97.4%. Another survey from Colombia recorded seroprevalence of 89.3%, whereas a Chinese study found just a 2.1% prevalence.