The fourth dose of the COVID-19 vaccine is approved to boost immunity


The National Vaccine Institute has approved a fourth dose of COVID-19 vaccine to boost immunity among specific groups. 

According to Dr Opas Karnkawinpong, director-general of the Department of Disease Control (DDC), the latest meeting Advisory Committee on Immunization Practice (ACIP) initially approved a fourth round of vaccinations for medical personnel and frontline staff, patients with chronic illnesses and low immunity, and people who have had their third dose for more than three months.

Dr. Opas said people who receive the first two doses of an inactivated virus vaccine, followed by the third dose of a viral vector type vaccine, are advised to get an mRNA jab for their fourth shot. For example, if the first two doses were Sinovac injections, followed by an AstraZeneca injection, then the fourth should either be a Pfizer injection or another AstraZeneca shot. If the first two doses were Sinovac shots, followed by a Pfizer jab, then it is recommended that the individual receive Pfizer doses for the fourth shot.

The ACIP board has meanwhile approved inoculations for children between the ages of 5 and 11 using vaccines approved by the Food and Drug Administration (FDA). Dr Opas, however, said the most important thing is for parents to understand information related to vaccines before voluntarily giving consent for their children to get vaccinated.

The approvals will be submitted to the National Communicable Disease Committee for consideration by December 24.



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