Inhibition of evagination of Taenia saginata cysts using ozone gas

Abstract

Cysticercosis is one of the most important zoonoses in the social, economic and public health in our country. A study was conducted with 240 samples of cysts, to determine whether the inhibition of evagination of scolex of Taenia saginata with different concentrations of ozone. A group of 120 samples of cysts were subjected to direct exposure to gas and another group with 120 samples was tested against immersion in water and ozonation. In evaluating the 120 samples submitted to immersion in aqueous mixture of oxygen / ozone in only 51 cysts (42.5%) proven to inhibit budding, while 69 cysts (57.5%) were not inhibited. Of the 100 samples submitted to direct exposure to the gas mixture oxygen / ozone, 45 cysts (37.5%) showed inhibition of evagination, while 75 cysts (62.5%) suffered no inhibition of evagination. Despite the slight advantage of the method of immersion in aqueous solution on the method of direct exposure to the gas, ozone was not effective as an inhibitor of budding of the cysts of Cysticercus bovis. It is believed that ozone should be further studied with the proposed objectives varying concentrations, the temperature of completion of work and exposure times.