1. STOP permitting the mixing of two different COVID-19 vaccines; and 2. START following the manufacturer's tested and approved spacing of jabs. In the case of the Pfizer vaccine, stop permitting any dosing schedule other than the 21 days recommended, AND TESTED, by the manufacturer.
1. The Pfizer and AstraZeneca vaccines have not been developed NOR TESTED on the basis that they can be used interchangeably.
2. On 30 December 2020, Pfizer released a statement saying that its vaccine was not intended to be taken 12 weeks apart. It said the vaccine's SAFETY and EFFICACY had not been evaluated on any dosing schedule OTHER THAN 21 DAYS between jabs. It added that "there are NO DATA to demonstrate that protection after the first dose is sustained after 21 days."