Eighteen day old neonate presented with features of early neonatal sepsis. History of mother revealed a travel from non-endemic area of malaria to endemic area, and on the 7th gestational age mother detected as having malaria. She was treated with quinine and cured. Baby was also evaluated for congenital malaria in first few neonatal days and discharged. Now the baby on evaluation shows anemia, hepatosplenomegaly and diagnosed with a Plasmodium vivax infection on peripheral smear. The quinine failed to prevent transplacental transmission. Prolonged interval between birth and onset of symptoms may be explained by transmission late in pregnancy or during delivery or by presence of transplacentally acquired maternal antibody (IgG). Mother acquired malarial infection after travel to an endemic area and transmitted to the baby. A high level of suspicion is warranted in babies of malaria infected mothers even when the neonate peripheral smear shows no evidence of infection.