The association between liver fluke infection and the occurrence of cancer in humans
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چکیده
Viravan et al., 1986). Reinfection can occur after treatment. Upatham et al. (1988) reported an extremely rapid return (Jess than one year) to pre-treatment levels of infection in a mass-treated community that had had an extremely high initial intensity of infection. Furthermore, these authors showed a significant association between preand posttreatment egg counts among individuals, indicating that stable, individual behavioural and immunological factors, as weil as chance, determine levels of infection.
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