You have to understand the nature of the disease and its mode of transmission before u could understand why they considered it a big problem here.

First of all, TB is an airborne disease, that can contaminate anyone that comes next to the infected person, or even the drinking glass or spoons they used at home or in the restaurant are not safe and contaminated of bacteria that can possibly transmit to other people. Unlike HIV and Hepatitis w/c is bloodborne that can be transmitted only thru sexual intercourse or blood transfusion or any sharp contaminated instruments that accidentally prick you, otherwise the person next to them is definitely safe.

Also it is believe that old TB case is possible to recur.