I know that area. Lots of recent immigrants and drug activity. A friend of mine lives done the street.
The question then becomes will the population of this apartment not be as responsible about health care as are typical US citizens?
What happens when they go to emergency wards and doctor's offices for visits? Will they infect those locations while they're waiting for care? Is Dallas one of those places with hordes from Central America and other illegals, who are going to hide rather than come forward, fearing deportation?
Drug activity. Blood contact.