The UK, which approved the world’s first COVID-19 vaccine one after another, decided to step into the’speed battle’ of vaccination by changing the vaccination method.
Accordingly, the world medical community and health authorities are paying attention to the results.
Corona 19 vaccine usually requires the first vaccination and then the second vaccination 3 to 4 weeks later.
However, the UK government has decided to increase the interval between the first and second doses to 12 weeks.
Instead of delaying the second dose, the strategy is to get as many people as possible to receive the first dose.
Recently, the number of new confirmed corona19 in the UK reached a high of 40 to 50,000 people a day and spread to the mutant virus.
The UK government will adopt this strategy for the AstraZeneca vaccine as well as for the Pfizer vaccine that has already begun.
In response to this, some are raising concerns that it may affect the efficacy.
The UK government has introduced that AstraZeneca has already conducted an experiment to increase the interval between the first and second doses to at least 9 weeks, in which case the effect of the first dose was 73%.
However, scientists are still pointing out the lack of data in this experiment.
Pfizer also stressed that the study data on the efficacy of the first dose does not cover the time of the second dose, and that the second dose is essential for maximum protection against disease.