Do flu vaccines work?

Do flu vaccines work?

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It has been known for decades jab-in-the-arm or injectable vaccines mostly generate the wrong antibody class for mucosal diseases such as the flu (covid is the rebranded flu).

Scientific reviews stating that injected vaccines are poor inducers of mucosal, secretory antibodies which protect the lungs and intestines. “Mucosal immune responses are most efficiently induced by administration of vaccines onto mucosal surfaces, whereas injected vaccines are generally poor inducers of mucosal immunity.”

https://www.nature.com/articles/nri1777

https://doctors4covidethics.org/immunology-101-why-intramuscular-covid-19-vaccination-must-fail/