hopefully ALt and AST will never rise. that depends upon many factors and when that happens means 'frank"hepatitis or when a liver biopsy would show damage on it from the return of the virus
How long does it normally take for alt/ast to begin rising to reflect that the liver is infected? What is "frank" hepatitis?
the virus can enter the new liver as early as during the transplant but frank hepatitis does not occur. In essence the new liver is infected as soon as it is transplanted.
How long does it normally take to infect the new liver?
unless the virus has infected the new liver as manifested by abnormal liver tests prompting the need for a liver biopsy, pre-emptive treatment is not indicated. we usually start considering treatment when patients have stage 2 fibrosis on a liver biopsy.