WHO noted with concern that 1,18,000 positive cases have been reported globally in 114 countries and more than 90% of cases are in just four countries.
OUTBREAK: A sudden rise in cases of a disease in a particular place.
EPIDEMIC: A large outbreak, one that spreads among a population or region. The current outbreak of a flu-like illness caused by a new virus in China is considered an epidemic.
PANDEMIC: Generally refers to an epidemic that has spread on a more global scale, affecting large numbers of people. A pandemic is the worldwide spread of a new disease.
