Swine flu also known as swine influenza or Pandemic Influenza is a respiratory disease. It is caused by virus called H1N1 virus (introduced in 2009). This virus infects the wind pipe (respiratory tract) of pigs and later it gets transmitted to human beings. It results in nasal secretions, cough, decreased appetite, and restless behavior.
Swine flu was a relatively new strain of influenza virus (flu) that was responsible for a flu pandemic during 2009-2010. Swine flu viruses may mutate (change) so that they are easily transmissible among humans.
On 10 August 2010, the World Health Organization (WHO) declared that the swine flu pandemic was officially over. However, this does not mean that swine flu has been completely eliminated. The H1N1 virus that caused the pandemic is now a regular flu virus and continues to circulate seasonally worldwide.
Swine flu has an incubation period (the time taken for the symptoms to appear) of 1-4 days. Its symptoms are similar to influenza (flu). These include:
· Running nose
· Sore throat
· Shortness of breath or cough
· Loss of appetite
· Diarrhea or vomiting