It isn't recommended for 50+ because it may not produce a strong enough immune response in people within that age group. For 50+, the injected vaccine is recommended, since it produces the right result.
It doesn't have anything at all to do with safety.
It isn't recommended for 50+ because it may not produce a strong enough immune response in people within that age group. For 50+, the injected vaccine is recommended, since it produces the right result.
It doesn't have anything at all to do with safety.