♦ Based on real-life data from the United Kingdom, the COVID-19 Working Group suggested to increase the gap.
♦ NEGVAC approved the suggestions (National Expert Group on Vaccine Administration). The interval between doses is currently four to six weeks.
♦ If the difference between the doses increases, the protective effect of the vaccine will also increase. In Canada, the interval between doses is three to four months.
♦ A Lancet study showed that if the difference between doses increases from 6 weeks to 8 weeks to 12 weeks to 16 weeks, the protection (efficacy) against COVID-19 will increase from 55.1% to 81.3%.