“if you have a dose of the moderna vaccine first, or the pfizer vaccine first, or the astrazeneca vaccine first, (we ask) what is the difference if you have a different vaccine or the same vaccine as your second dose?,” he said.
“it’s not about trying to supersede astrazeneca, it’s really looking about the different combinations.
“the bottom line is that during the pandemic, we’ve had supply issues with one or other of the vaccines and it’s possible that will continue.”
sadarangani said the research deadline for the federally funded project was “as soon as possible”.
he said b.c.’s 300 volunteers would be randomly assigned to a study group and provide blood samples four times over the course of a year.
“depending on what you have for your first dose, or if you haven’t had a vaccine, you will get allocated into one of the 13 study groups,” he said.
in a statement, dr. theresa tam, canada’s chief public health officer, said studies on mixed covid-19 vaccine schedules were underway in the u.k.
“in addition to international data, this canadian study will help inform canada’s public health recommendations on the potential to use different combinations of vaccines for the first and second dose, as well as different dosing intervals,” tam said.