With the emergence of new COVID-19 variants and the approaching flu season, many Canadians are questioning whether they should take their booster shot immediately or wait for the updated vaccine formulations. Health Canada is currently reviewing these booster shots, which are expected to be released in the fall. The new vaccines are designed to target the XBB.1.5 Omicron subvariants that are currently circulating in the country. The National Advisory Committee on Immunization (NACI) has previously stated that the fall boosters will focus on immune-evading SARS-CoV-2 variants.
The choice of whether to get the booster shot immediately or wait is a topic of debate among health experts. Kerry Bowman, a professor of bioethics and global health at the University of Toronto, expresses frustration at the lack of clarity from public health authorities. Some individuals may consider getting both the current booster shot and the updated version when it becomes available, but this approach is discouraged. It is advisable to wait at least six months between vaccine shots.
According to NACI, the fall booster shots will offer a better immune response against the recent variants compared to the current vaccines. It is particularly important for individuals at higher risk, such as those over 65, long-term care residents, pregnant individuals, and those with underlying conditions, to get vaccinated. Health Canada encourages all Canadians to ensure that their COVID-19 vaccination is up to date and emphasizes that all approved vaccines in Canada are effective against severe illness, hospitalization, and death from COVID-19. The health department’s website aligns with NACI’s guidance on booster doses.
The World Health Organization (WHO) recommends getting a booster or additional dose within six to twelve months, depending on the individual’s risk category. Dr. Maria Van Kerkhove, the WHO technical lead on the COVID-19 response, emphasizes the importance of getting a booster right away for those at higher risk. However, the WHO no longer routinely recommends additional boosters for medium or low-risk individuals.
Experts acknowledge that the decision to get a booster shot now or later depends on individual risks and circumstances. Clear guidance from public health authorities is needed to navigate the uncertainty surrounding the fall booster. With the presence of new variants, determining the level of risk and appropriate precautions has become more challenging. Some vulnerable populations, like the elderly, may be at higher risk of infection due to the mutating virus. While waiting for the updated formulations is generally advisable, individuals starting chemotherapy or undergoing major surgery may consider getting a booster earlier.
Dr. Gerald Evans, an infectious disease specialist, highlights the importance of having the XBB vaccines available before the flu season begins. Health Canada is currently reviewing three new vaccine formulations containing the XBB.1.5 Omicron subvariant. Pfizer-BioNtech and Moderna vaccines are expected to receive approval in the fall, while Novavax will follow at a later date. A specific rollout date has not been established yet.
In conclusion, Canadians face a crucial decision regarding the timing of their booster shots. The availability of updated vaccine formulations specifically targeting the latest variants is pending approval. While waiting is generally recommended, individuals at higher risk may consider getting the booster earlier. Clarity and guidance from public health authorities are crucial in navigating this decision.
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