Why did my child get hand, foot, and mouth disease three days after vaccination?

Thanh Tra, a 28-year-old parent from Ho Chi Minh City, reported that her 6-month-old child was diagnosed with hand, foot, and mouth disease only three days after receiving the vaccine. She expressed confusion about why her child still contracted the illness despite being vaccinated and questioned the vaccine's effectiveness. This situation often causes anxiety for parents, especially when they expect immediate protection from vaccination. Understanding the mechanism of action and the time required for a vaccine to become effective is crucial to avoid misunderstandings. Health experts typically advise on the necessary period for the body to develop antibodies post-vaccination. Key points * A 6-month-old child contracted HFMD 3 days after vaccination. * Parent questioned the vaccine's effectiveness. * Understanding vaccine mechanism and onset of action is important. Nguồn / Source: VnExpress - Sức khỏe