A well educated individual who actively spreads facts about vaccines to disbunk the misinformation that anti-vaxxers spew. This person is also known to mock anti-vaxxers mercilessly and thoroughly enjoys tearing apart the outdated studies or cherry picked information that they post.

A person who supports appropriate vaccinations based on their understanding of science-based medicine, reputable peer-reviewed journal articles, and overwhelming scientific consensus. These people vehemently reject claims based on feelings, anecdotal data, mommy-bloggers, Google University graduates, the crapumentary Vaxxed, and all other forms of woofuckery, in general.

A person who has an ounce of common sense.

A person who believes in modern medicine to help prevent millions of people from dying each year.

A person who knows not to ask advice about vaccines, and other medical procedures, from a bunch of uneducated strangers on a computer.
They will seek to talk to a healthcare professional instead.

A person who doesn't try to scam people with their expensive and useless essential oils, diluted homeopathic unicorn tears and multiple gofundme accounts.

A person with infinite patience when dealing with anti-vaxxer and their regurgitated fake news articles and biased studies.

A person who knows coffee is a drink and not enema material.
A person who knows that urine is a waste product and should be flushed and not drunk.
A person who doesn't see people with autism as 'damaged and injured'.

A person with enough common sense to vaccinate their kids, protecting them from preventable diseases like a decent parent.

someone who believes that vaccines work because they do and aren't a fucking idiot that will die by the age of 3 because they weren't vaccinated. anti-vaxxers spend 2 minutes on google, search up "vaccines cause autism", find some bullshit studies that don't prove jack-shit and start spreading bull-shit information on their annoying, stupid and retarded facebook groups.

A useful mug who shills for pharmaceutical companies to have trillions of dollars in profit, claiming they are pro-science, while simultaneously having never read a single vaccine study.

A pro-vaxxer thinks that people who question vaccines are "killing their grandma", or "baby killers", or "science deniers", while conveniently forgetting that vaccines contain aborted fetus cells, formaldehyde, synthetic genetic material, vaccines are literally designed to harm (and thus cannot be classified as medicine), and many many people have died within hours of having a vaccine, but no-one has ever died as a direct consequence of refusing to be injected with formaldehyde.

Pro-vaxxers like to make the argument that you'd use a seatbelt in a car because it saves lives, while totally ignoring the obvious point that car makers are legally liable to make the car and seatbelt safe, whereas vaccine companies are legally exempt from making their product safe.

Pro-vaxxers simply like to feel morally superior to people that actually think for themselves, so they construct an advanced playlist of logical fallacies that they trot out to avoid being caught.

"You're an idiot" - ad hominem
"You're a science denier" - hypocrisy, appeal to science (fallacious because the science doesn't support pro-vaxxers)
"So you like killing babies?" - red herring
"You're literally a flat-earther!" - non-sequitur masquerading as an ad hominem