Before, infant Kieu Hai Yen was taken to the medical clinic in Can Kiem Commune on January 9 for vaccination.
After examining his health which is in good condition, medical workers administered a shot of vaccine ComBe Five as well as gave consultation how to take care of him to parents.
However, the infant suffered high fever later though he took medicine to reduce fever. Next morning when he turned pale, his parents took him to the hospital for emergency treatment but it was late. He was pronounced dead later.
