Flu Vaccine Timing: When & How Long Does It Last?
Here’s a breakdown of the facts from the provided text, focusing on key takeaways about the influenza vaccine:
Key Points:
* Expert Source: The information comes from a specialist and professor at the Faculty of Medicine at Vanderbilt University, USA.
* Who Benefits from Early Vaccination: Children under eight who haven’t received the flu vaccine before need two doses, spaced at least four weeks apart, to build adequate immunity. The first dose primes the immune system.
* Dosage for Others: Older children, adolescents, and adults generally need only one dose annually. However, getting two doses throughout the year may offer better protection against evolving viruses.
* Vaccine Effectiveness Declines: The vaccine’s effectiveness decreases over time, increasing the risk of influenza by 16% every 28 days after vaccination. This makes people more vulnerable during peak flu season.
* annual Vaccination Recommended: Doctors advise everyone six months and older to get the flu vaccine every year.
* Vaccine types: Most Americans receive a three-component vaccine targeting three influenza strains. A high-dose vaccine is recommended for adults over 65.
In essence, the article emphasizes the importance of annual flu vaccination, particularly for young children who require a two-dose schedule, and highlights the diminishing effectiveness of the vaccine over time.