Where did H1N1 virus originated from?

The EAsw H1N1, which is derived from avian H1N1, was first detected in Belgium in 1979 and since then has become established in the European swine population (Pensaert et al., 1981; Scholtissek et al., 1983; Brown, 2000).

What causes H1N1 influenza virus?

In the spring of 2009, scientists recognized a particular strain of flu virus known as H1N1. This virus is a combination of viruses from pigs, birds and humans that causes disease in humans. During the 2009-10 flu season, H1N1 caused the respiratory infection in humans that was commonly referred to as swine flu.

Where is the origin of influenza?

What is the history of Influenza? Records show that the flu has been around for at least 1,500 years. The history of influenza begins with Hippocrates (5th century BC) who first reported that an influenza-like illness spread from Northern Greece to the islands south and elsewhere.

How does H1N1 affect the body?

H1N1 influenza is a subtype of influenza A virus, a communicable viral illness which causes upper and in some cases lower respiratory tract infections in its host. This results in symptoms such as nasal secretions, chills, fever, decreased appetite, and in some cases, lower respiratory tract disease.

When did H1N1 start and end?

The 2009 swine flu pandemic, caused by the H1N1 influenza virus and declared by the World Health Organization (WHO) from June 2009 to August 2010, is the third recent flu pandemic involving the H1N1 virus (the first being the 1918–1920 Spanish flu pandemic and the second being the 1977 Russian flu).

Did swine flu originated in China?

2020 G4 EA H1N1 publication G4 EA H1N1, also known as the G4 swine flu virus (G4) is a swine influenza virus strain discovered in China.

Where did swine flu come from China?

The new strain, G4 EA H1N1, emerged on China’s pig farms, and the researchers said it has all the hallmarks of a pandemic virus.