How many doses of the quadrivalent influenza vaccine are needed for effectiveness?
Disease description:
We are about to give our child the quadrivalent influenza vaccine and would like to know how many doses of the quadrivalent influenza vaccine are needed for optimal effectiveness.
Doctor's answer (1)
Dr. Lu Haiying
The quadrivalent influenza vaccine can effectively prevent influenza infection. Generally, the first dose is recommended at 6 months of age, and individuals of all ages can receive one dose to achieve optimal protection.
In addition, some experts suggest that children under 3 years old may need two doses of the quadrivalent influenza vaccine to maintain effective immunity, while people in other age groups only need vaccination once every year.
In summary, to achieve the best preventive effect, it is advisable to follow the recommendations of healthcare professionals.
