With the onset of flu season in Prince Edward Island, there are concerns emerging regarding the effectiveness of the influenza vaccine against the evolving H3N2 strain. Dr. Heather Morrison, the chief public health officer of P.E.I., mentioned on CBC’s “Island Morning” that while H3N2 is not a new flu type, it is spreading with mutations that could potentially reduce the vaccine’s efficacy.
The flu shot guards against three common strains in Canada – two influenza A strains, H3N2 and H1N1, and the influenza B strain. These strains vary in prevalence each year, making it challenging to predict the exact nature of the upcoming flu season.
Experts suspect that the mutated H3N2 strain is contributing to an early increase in flu cases globally. This strain is known for causing severe infections, particularly in older individuals. The recent mutations are causing concerns as they may reduce the vaccine’s effectiveness against the virus.
While data on the circulating influenza strains in Canada is still limited, recent federal reports indicate an equal distribution of H1N1 and H3N2 among detected influenza A subtypes nationwide. However, many experts anticipate a rise in H3N2 cases.
Despite uncertainties about the vaccine’s effectiveness against the evolving strain, Dr. Morrison emphasized the importance of getting the flu shot as it still provides protection against other flu strains. She highlighted that even partial protection is better than none, citing unvaccinated individuals as the majority of flu-related hospitalizations in P.E.I.
Islanders can receive both the flu shot and the COVID-19 vaccine from their primary care providers or local pharmacies. Public Health Nursing vaccination clinics also offer these vaccinations. Additionally, P.E.I. has expanded its RSV vaccine program this year, providing free protection against the virus for infants and seniors aged 75 and above through Public Health Nursing.