LA – Pfizer has said in its press release that Covid-19 vaccines have been demonstrated to be effective in preventing the disease in individuals, but it is currently unknown if or to what degree vaccination will be sufficient to achieve herd immunity to prevent the spread of the Covid-19 virus – so continue to follow recommended Public Health measures even after you get vaccinated.
Source: https://www.pfizerbiontechvaccine.ca/?cmp_SEM_2022_EN