An image shared online has made several false or misleading claims about the safety of the nasal flu vaccine, which is routinely offered to children in Britain.
The image mimics an informational poster, and can be seen here (here).
The nasal spray flu vaccine, also known as the flu mist, contains live flu viruses that have been weakened to stimulate the immune system while not causing disease. It is given as a spray that is squirted up the nostril (here).
Text on the image claims that the flu mist vaccine “pushes through” the cribriform plate, which forms the roof of the nasal cavity (here), to the brain. This is false.
AstraZeneca, the developers of FluMist® Quadrivalent (www.flumistquadrivalent.com/), told Reuters that since the vaccine is administered via the nasal passages it is “essentially a topical application”. This means it does not “push through the cribriform plate” as