Yes. Since you're a fan of doing your own research, check out Australian immunization rates and cases of endemic vs introduced measles from 2010 to 2018
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Replying to @GidMK @UrbaneDoc4Kids and
You would expect a reduction of cases, at least in the short term, even if the vaccine cannot produce herd immunity.
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Replying to @alc_anthro @UrbaneDoc4Kids and
That's very simply a nonsensical statement
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Replying to @GidMK @UrbaneDoc4Kids and
No. That's basic math. A vaccine that can prevent symptoms but not infection would result in a reduction of cases, as vaccination rates increase, up until the point that the total number of cases outweighs the suppression provided by the vaccine.
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Replying to @alc_anthro @UrbaneDoc4Kids and
A vaccine that prevents symptoms but not infection would not reduce cases at all. I assume this is some sort of misunderstanding of the pertussis vaccine, wherein protection against infection wanes over time despite a long-term benefit in terms of symptoms if you are infected
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Replying to @GidMK @UrbaneDoc4Kids and
> A vaccine that prevents symptoms but not infection would not reduce cases at all. Holy shit. SERIOUSLY?! If there are no symptoms, then by definition there are no cases.
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Replying to @alc_anthro @UrbaneDoc4Kids and
It does, of course, depend on what we're talking about - chronic diseases don't always have specific definitions in the same way infectious diseases do - but a 'case' of infectious disease is almost always characterized as an infection by the pathogen
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Replying to @GidMK @alc_anthro and
Exceptions are where there are multiple sites of infection, for example legionella, but if you have an asymptomatic but lab-confirmed case of, say, hepatitis B, it's still a case
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Replying to @GidMK @alc_anthro and
In the case of pertussis vaccination, people can unknowingly be infected with the disease post-vaccine and be contagious, but never experience significant symptoms. They still have an infection, they just don't know it. They also are unlikely to be caught by monitoring systems
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Replying to @GidMK @UrbaneDoc4Kids and
Disease is also different than infection. In any case, I'm also half asleep and burned out. Let's stop arguing over words. A vaccine may stop expression of symptoms, but not infection. We need to know which is the case with the measles vaccine.
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We do. As I said, you're welcome to take a glance at cases of measles in Australia in the last decade. Pay particular attention to the endemicity and elimination of the disease, it might be informative
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