With the emergence of variant COVID-19 strains, global vaccine supply issues, and the need to rapidly immunise the population, a number of clinical trials are investigating the option of “mixed schedules”. Mixed schedules have been used previously in other vaccination strategies and involve the administration of different vaccine brands to complete a vaccine course.

Our new reference page explores the clinical trials underway which aim to determine the safety of mixed scheduling, the immunogenicity, as well as the recommendations for intervals between doses.

Due to a lack of available data, mixed vaccine schedules are not currently approved in Australia however are in use in Canada and across Europe.


MVEC: COVID-19 mixed vaccine schedules