advntages of more than one flu strain in a vaccine
1. Increased Protection: Including multiple flu strains in a vaccine can provide broader protection against a variety of influenza viruses. This can help to reduce the likelihood of getting sick from different strains of the flu.
2. Cross-Protection: Some flu strains may be more closely related to others, which can provide cross-protection against similar strains that are not included in the vaccine.
3. Seasonal Coverage: As flu viruses can mutate and change over time, including multiple strains in a vaccine can help to better adapt to the circulating strains during a particular flu season.
4. Public Health Impact: By including multiple strains in a vaccine, the overall effectiveness can be improved, which can lead to reduced illness and hospitalizations, as well as lower healthcare costs and burden on healthcare systems.
5. Convenience: Including multiple strains in a single vaccine can reduce the need for separate vaccinations for each strain, making it more convenient for individuals to get vaccinated against the flu.