A 32-year-old pregnant woman from Tamil Nadu presents at 18 weeks gestation with a 3-day history of low-grade fever, maculopapular rash on face and trunk, mild arthralgia of wrists and knees, and conjunctival injection without exudate. She has no warning signs of severe disease. Serum IgM antibodies against Zika virus are positive. What is the most important counselling point for this patient?