Defamation Law: The Basics. There is always a delicate balance between one person's right to freedom of speech and another's right to protect their good name. It is often difficult to know which personal remarks are proper and which run afoul of defamation law.
What Causes TB. Tuberculosis is an infection caused by bacteria. It's spread through the airâwhen an infected person coughs, sneezes, laughs, etc. However, it is not easy to become infected with tuberculosis. Usually a person has to be close to someone with TB disease for a long period of time.
Bovine TB is caused by Mycobacterium bovis â a close relative of Mycobacterium tuberculosis, the organism that causes TB in humans. M. bovis is clinically difficult to distinguish from M. tuberculosis because, explains Geoghegan, TB strains share 99 per cent of their DNA sequences.