उदै-फिलौफोर आरो एखे रोखोमनि पेरासाइतफोरा जौगाफु हादोरफोरनि फोसाबजायै लोंनाय दैयाव थायो, आरो समफारि गोनां क्लरिनेसोन आरो सोदांनाय लोंनाय दै रानसारथि गोयैसिम जौगालु हादोरफोरनि दैयाव बैफोर थायोमोन।
Gutworms and similar parasites are present in untreated drinking water in developing countries, and were present in the water of developed countries until the routine chlorination and purification of drinking water supplies.