1 Children gain on average between 30-40 pounds (13.5-18.0 kilograms) between age 11-14. 2  A child can gain 20 pounds (9 kilograms) or more in one year. 3  Girls gain weight first as a layer of fat all over the body and then more around breast, hip and thighs.s an adolescentâs growth velocity (speed) increases, they physically begin to thin out and the weight gain is adjusted on their bodies. Statistics on teenage height growth patterns: 1  The beginning of growth velocity is approximately 9 years old for girls and 11 years old for boys. 2  The growth spurt lasts 2-3 years.
If a person's immune system becomes unable to prevent the bacteria from growing, the TB becomes active. Of people who have latent TB, 5% to 10% (1 to 2 people out of 20) will develop active TB at some point in their lives. 1
Active tuberculosis can also develop from a latent infection when something stresses or impairs the immune system, such as a chronic disease or HIV/AIDS. This may allow the tuberculosis bacteria to become active and multiply in the body. Common symptoms of active tuberculosis affect the lungs and include: Chest pain, especially with coughing or breathing. Coughing for three or more weeks. Coughing up blood (hemoptysis). Fatigue. Fever and chills. Malaise. Night sweats. Nontender swollen lymph nodes. Poor appetite.