Table 3. Prevalence of Acanthamoeba in different types of water analyzed worldwide.

Country	Type of water source	Prevalence of Acanthamoeba	Reference
Egypt	Swimming pools	60%	[11]
	Tap water	29.9%	[12]
Poland	Swimming pools	37.2%	[1]
USA, Oklahoma	Pond, running water	63%	[13]
USA	James river water	7%	[4]
Brazil, Porto alegre	Swimming pools	20%	[10]
Brazil, Rio Grande do sul	Tap water	9.5%	[14]
Jamaica	Tap water	59.5%	[15]
	Sea water	40%
Korea	Domestic tap water	46.9%	[16]
Thailand	River water	35%	[17]
Saudi Arabia	River water	36.7%	[18]
Turkey	Tap water	22%	[19]
Pakistan	Drinking water	92%	[3]
Saudi Arabia	Various water samples	17.5%	Present study