A recent study published in JAMA Network Open highlights that a second dose of the inactivated influenza vaccine offers additional protection in vaccine-naive children younger than 3 years of age. According to the authors, while a single dose can provide some immunity, the full two-dose schedule appears to confer greater benefits in terms of reducing influenza-related illness and complications in this vulnerable age group. However, the study also noted that the protective advantage of the second dose diminishes as children grow older, suggesting that the timing and age-specific effectiveness of vaccination are important considerations for pediatric immunization strategies.

The research analyzed outcomes in children who received either one or two doses of the influenza vaccine. The findi

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