I assume you’re referring to things like the flu vaccine. Many vaccines can last 10, 20 years or more which this doesn’t come close to. That’s not to say it’s

I assume you’re referring to things like the flu vaccine. Many vaccines can last 10, 20 years or more which this doesn’t come close to. That’s not to say it’s not a great improvement, I happily await the day we can nearly eliminate some of these infectious diseases that plague humanity.