According to scientists, while most adults were vaccinated against the disease when they were children, the immunity provided for by the vaccines has since been reduced and needs to be revamped.
Although the exercise is meant for the general public, KCCA is using the opportunity to prioritize the teachers and their non-teaching staff who missed out on the concluded Sinovac vaccine drive that targeted teachers, and those who were due to receive their second AstraZeneca jab.
