Most traditional flu vaccines are grown in chicken eggs—a process that has remained largely unchanged for decades. However, the product filed under BLA STN 125285 is different. Manufactured by Protein Sciences Corporation (a Sanofi company), Flublok is a . Here is what that means for you:
Next time you see the number on a medical form or a CDC fact sheet , you’ll know it’s not just a filing code. It’s the identifier for a sophisticated, egg-free tool in our public health arsenal that helps millions of people stay healthy every winter. 125285
Here is a blog post exploring why this specific number matters in the fight against the flu. Most traditional flu vaccines are grown in chicken
Clinical reviews associated with STN 125285 show that the vaccine is effective in preventing laboratory-confirmed influenza. Like any vaccine, it can have side effects—most commonly pain at the injection site, headache, or fatigue—but these are typically mild and short-lived. The Bottom Line Here is what that means for you: Next
: The recombinant process allows for a more precise match to the flu strains predicted for the season, as it avoids "egg-adaptation" mutations that can sometimes make traditional vaccines less effective. Who is it for?
While "125285" might look like a random string of numbers, it is actually a significant identifier in the world of public health and pharmaceutical regulation. Most notably, is the Biologics License Application (BLA) Submission Tracking Number (STN) assigned by the FDA for Flublok , a unique type of influenza vaccine.