The first peer-reviewed study in North America examining the timing between the first and second doses of COVID-19 mRNA vaccines shows that a longer dose interval leads to a stronger immune response. The study is funded by the Government of Canada through its COVID-19 Immunity Task Force.
Widening the vaccine dosing interval has the potential to lead to a stronger long-term immune response in individuals and can facilitate faster community-level access to the first COVID-19 vaccine dose.
COVID-19 antibodies wane much faster than expected among seniors and those with comorbidities, according to the latest research on long-term care residents funded by the COVID-19 Immunity Task Force findings they say reinforce policy decisions and recommendations around providing booster shots to vulnerable populations.