A 24-year-old primiparous woman in her eighth month of gestation develops a positive IgM titer to Toxoplasma gondii for the first time. She should be advised by her physician that

  •   a newborn with a positive anti-Toxoplasma IgG response should be treated with anti-parasitics
  •   future infections can be avoided by proper vaccination and worming of cats
  •  retinochoroiditis can be prevented by drug treatment of an infant with a positive IgM response
  •  major organ damage can be reversed by prompt treatment of the newborn
  •   this child and all future fetuses are likely to be infected