Influenza A (H1N1) virus is the subtype of influenza A virus that was the most common cause of human influenza (flu) in 2009.
Some strains of H1N1 are endemic in humans and cause a small fraction of all influenza-like illness and a small fraction of all seasonal influenza.
H1N1 strains caused a small percentage of all human flu infections in 2004–2005. Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza).
In June 2009, the World Health Organization declared the new strain of swine-origin H1N1 as a pandemic. This strain is often called swine flu by the public media.
On August 10, 2010, the World Health Organization declared the H1N1 influenza pandemic over, saying worldwide flu activity had returned to typical seasonal patterns.
In US, Influenzinum a homeopathic remedy is widely available on health stores as OTC – over the counter product. Influenzinum 9c is the only homeopathic flu product that is updated each year based on the flu strains, as updated by CDC and WHO. These strains include H1N1 also.
The United Nations FAO recently urged heightened readiness and surveillance against a possible major resurgence of the H5N1 Highly Pathogenic Avian Influenza amid signs that a mutant strain of the deadly Bird Flu virus is spreading in Asia and beyond, with unpredictable risks to human health.
A swine flu virus infecting a woman in Singapore mutated into a drug-resistant form virtually overnight, doctors reported in a study that they say shows the limitations of using drugs to treat influenza.
The Indian Department of AYUSH (alternative systems) released a press note, on Sep. 2, suggesting use of homeopathic medicine Arsenic alba 30 one dose for three consecutive days as preventive for Swine flu. It has the approval of Director General Health Services and Ministry of Health & Family Welfare.
What is H1N1 flu ? H1N1 virus is a new type of Influenza virus affecting pigs, humans and maybe some other animals. Humans do not yet have herd immunity to it as they do to other types of flu viruses.