If the artist cuts the skin while shaving the customer (if that's necessary),
or if the tattoo needle is tainted with someone else's blood
(which shouldn't happen, unless the tattoo artist is a hack,
or if he/she punctures a zit or scab and doesn't clean the needle, immediately)
or is otherwise contaminated due to poor sterilization via airborne bacteria,
or if the manufacturer's inks are contaminated (also, highly unlikely),
or if the customer doesn't follow the artist's instructions after getting a tattoo,
which could lead to infection,
or if it turns out that the customer is severely allergic
to either the needle or inks (again, highly improbable),
then, yes, a tattooed individual could get sick and die from getting a tattoo,
but, you are far more likely to die from an untreated cold
or getting into a car crash while texting.
Reference: www.unlimited-tattoos.net
or if the tattoo needle is tainted with someone else's blood
(which shouldn't happen, unless the tattoo artist is a hack,
or if he/she punctures a zit or scab and doesn't clean the needle, immediately)
or is otherwise contaminated due to poor sterilization via airborne bacteria,
or if the manufacturer's inks are contaminated (also, highly unlikely),
or if the customer doesn't follow the artist's instructions after getting a tattoo,
which could lead to infection,
or if it turns out that the customer is severely allergic
to either the needle or inks (again, highly improbable),
then, yes, a tattooed individual could get sick and die from getting a tattoo,
but, you are far more likely to die from an untreated cold
or getting into a car crash while texting.
Reference: www.unlimited-tattoos.net