Previous results clearly indicate that G. intestinalis genotype A was isolated from fecal samples from humans and dogs residing in the same environment. Therefore, one can postulate a zoonotic transmission for Giardia. This investigation confirms the observation made in molecular epidemiological studies that Giardia obtained from infected humans also occurs in many mammalian species. Another investigation demonstrated that 75% of giardias isolated from humans were closely related to those with a canine origin,[23,24] leaving uncertainty about whether the animals were reservoir hosts for humans or vice versa. Finally, when genotypic analysis was made from 11 isolated DNAs, 37 variables were observed that could be divided into three groups. Such differences are possibly due to the host-adapted genotypes or perhaps represent distinct species that could be associated with variable pathology.
Was this article helpful?
The use of dumbbells gives you a much more comprehensive strengthening effect because the workout engages your stabilizer muscles, in addition to the muscle you may be pin-pointing. Without all of the belts and artificial stabilizers of a machine, you also engage your core muscles, which are your body's natural stabilizers.