"Biomphalaria tenagophila " is an intermediate host for " Schistosoma mansoni " and a vector of schistosomiasis . " Schistosoma mansoni " came to Neotropics from Africa in context of the slave trade . " Schistosoma mansoni " was not able to infect " Biomphalaria tenagophila " in 1916 and it has adapted to this host since 1916.
22.
Coinfection of " T . trichiura " with other parasites is common and with larger worm burdens can cause both exacerbation of dangerous trichuriasis symptoms such as massive gastrointestinal bleeding ( shown to be especially dramatic with coinfection with " Salmonella typhi " ) and exacerbation of symptoms and pathogenesis of the other parasitic infection ( as is typical with coinfection with " Schistosoma mansoni ", in which higher worm burden and liver egg burden is common ).
