Person B has a higher transmission rate, increasing risk to Person A.
Person B is 29 times more likely to require hospitalization, utilizing beds and services Person A may require.
Person B is more likely to develop a mutated virus, with which to make the vaccine of Person A less effective.
Person B is squandering medical resources for an illness largely preventable by a free vaccine.
Person A is sick of Person B arguing their freedom gives them the right to infect others.
Person B is a horrible person.