Describe the epidemiology of Swine influenza.
Answers
In late March and early April 2009, an outbreak of H1N1 influenza A virus infection was detected in Mexico, with subsequent cases observed in many other countries including the United States . In June 2009, the World Health Organization (WHO) raised its pandemic alert level to the highest level, phase 6, indicating widespread community transmission on at least two continents . The pandemic was declared to be over in August 2010 .
The epidemiology, transmission, and virology of pandemic H1N1 influenza A virus infection will be reviewed here. The clinical manifestations, diagnosis, treatment, and prevention of pandemic H1N1 influenza A virus infection are discussed separately. (See "Clinical manifestations and diagnosis of pandemic H1N1 influenza ('swine influenza')" and "Treatment and prevention of pandemic H1N1 influenza ('swine influenza')".)
The epidemiology of seasonal and avian influenza virus infections is discussed separately. (See "Epidemiology of influenza" and "Epidemiology, transmission, and pathogenesis of avian influenza" and "Avian influenza A H7N9: Epidemiology, clinical manifestations, and diagnosis".)
Symptoms of H1N1 swine flu are like regular flu symptoms and include fever, cough, sore throat, runny nose, body aches, headache, chills, and fatigue. Many people with swine flu have had diarrhea and vomiting. ... It's not clear why these symptoms occur, although they may be caused by Reye's syndrome.
Answer:
In August 2010, the World Health Organization declared the swine flu pandemic officially over. Subsequent cases of swine flu were reported in India in 2015, with over 31,156 positive test cases and 1,841 deaths up to March 2015.