Once eggs are identified appropriate treatment can be initiated. Human Toxocarosis results from paratenic host second stage larvae somatic migration. In man the migrating larvae develop nodules which occur primarily in the liver, kidneys, brain and lungs. They can also occur in the eyes causing granulomatous retinitis. They are associated with a sustained eosinophilia and clinical signs based on organ involvement.
Children are at the greatest risk of infection.
The typical epidemiological situation involves a toddler soil contaminated with ascarid eggs. As mentioned previously these eggs are hardy and exist for a long time in soil. Soil in the vicinity of habitual canine defecation sites and public parks visited by large numbers of dogs tend to be highly contaminated. Although T.cati is less of a risk than T.canis, it has also been associated with Visceral Larva Migrans. Therefore it is advisable to keep toddlers from playing in areas where dogs and cats habitually defecate.