Swine Flu is a number one health concern the world over. The HI1N1 flu or Swine Flu was first detected in US in April 2009. The worst affected areas initially were Canada and Mexico before H1N1 flu cases began to emerge in other areas of the world. In a short span of four months, the disease has spread to almost all regions in the world. World Health Organization has called H1N1 as pandemic which means a big epidemic that involves the entire country or perhaps the world. Usually, the signs of a pandemic are when a virus without any immunity to stop it, spreads across various parts of the world. Swine Flu spreads from person to person in the same way as regular seasonal influenza viruses spread. People with high risk for seasonal flu are also at high risk for H1N1 flu. For example, people above 65 years of age, pregnant women, children below 5 years of age and those with chronic medical conditions and lifestyle diseases like diabetes are at high risk. The symptoms of H1N1 is similar to the ones that people get in regular, seasonal flu and so things like fever, sneezing, cough, body ache, head ache, shivering, sore throat and fatigue are common. Diarrhea and vomiting are also symptoms that have been associated with some cases of this flu, also known as Influenza A. H1N1 is transmitted the same way like seasonal flu. Flu viruses are spread usually from person to person through sneezing or coughing by people who have influenza. Some people may become infected with the deadly H1N1 by touching something that has virus on it and then bringing to their nose or mouth. Infected people can actually infect others from the first day itself, even before they themselves get any symptoms. This means there are also chances that one can pass on the swine flu symptoms even before she or he knows that she or he is sick. If you live in places where people have been infected with H1N1 virus or have influenza like symptoms mentioned above, then you should stay home and avoid contact with these people. If you develop flu like symptoms, do not leave things to chance and take instant medical care. Your health care provider or doctor will be able to tell you whether H1N1 flu testing is required.