TB is considered . an epidemic a viral infection a local problem a pandemic

A disease.

Explanation: TB is considered a disease caused by a germ called Mycobacterium tuberculosis that is spread from one person to another person through the air. TB usually affects the lungs but it can also affect other parts of the body such as the brain, kidney and spine.

I hope this helps :)

during longer space exploration trips, crewmembers may develop vision impairment risks and short-term cardiac atrophy or a decrease in the size, strength, weight, and activity of the heart during space flight because they can experience microgravity. in addition, the long-term medical condition is loss of bone mineral density and radiation exposure.