Presentation on theme: "Tuberculosis – The facts!"— Presentation transcript:
1Tuberculosis – The facts! TB is curable but kills 5000 people every day or 2 million per year.2 billion people (1/3 of world’s population) are infected with the microbes that cause TB1 in 10 people infected with TB microbes will become sick with active TB in their lifetimeTB is contagious & spreads through the air: if not treated each person with active TB infects people every year (approx)Almost 9 million new cases occurred in 2004
2What is TB?Tuberculosis is an infectious disease caused by bacteria (mycobacterium tuberculosis)The TB bacteria usually attack the lungs but it can also attack the kidneys, spine & brain. It is fatal if untreated.
3How is TB spread?TB germs are spread from person to person through the air.The bacteria are put into the air when a person with active TB coughs or sneezes.When a person breathes in TB bacteria they settle in the lungs & begin to grow, from there they can move through the blood to other parts of the bodyNot everyone infected with TB gets sick. People can have latent TB infection they don’t feel ill, have any symptoms & can’t spread TB to others. These people can go on and get the TB disease.
4How would you know if you had TB? Symptoms:Bad cough lasting 3 weeks or moreChest painCoughing up blood or sputumWeakness / tirednessWeight lossSweating at nightNo appetiteChillsFeverWith these symptoms people can spread TB to others.
5Estimated number of TB cases 2004 World RegionNumber (thousands)Africa2573North / South America363E. Mediterranean645Europe445South East Asia2967Western Pacific1925
6Why the global increase of TB? Population growthUrbanisationIncreasing povertyRates of HIV infection – this weakens the immune system. If HIV + 100x more likely to develop TB.Drug resistant TB (costs for LEDCs?)Young adults & women aged , most at riskPoorly managed TB programmes – especially in LEDCs (Africa & SE Asia)