The seasonal flu can lead to serious complications, especially for vulnerable populations. According to the World Health Organization and the Centers for Disease Control and Prevention, it is recommended that everyone over 6 months of age receive an annual flu vaccine. This is crucial as different strains circulate each year, and prior immunity diminishes over time. High-risk groups, including pregnant women, young children under 5, and seniors over 65, should prioritize vaccination due to their increased likelihood of severe illness. Additionally, individuals with pre-existing health conditions, such as asthma or diabetes, are at greater risk and should also receive the vaccine. Even young healthy adults are urged to get vaccinated to help protect those around them, as they can transmit the virus to at-risk individuals. Overall, widespread vaccination is essential for community protection against influenza.