More recent pandemics include the HIV pandemic and the H1N1 pandemics of 1918 and 2009.

The strain of Influenza A virus subtype H1N1 that killed up to 50 million people during the Spanish flu pandemic in 1918 was reconstructed in 2005.

The 2009 flu pandemic involved another strain of Influenza A H1N1, commonly known as " swine flu ".

The 2009 H1N1 ( swine flu ) flu pandemic is also considered a natural disaster.

A study conducted in coordination with the University of Michigan Health Service is scheduled for publication in the December 2009 American Journal of Roentgenology warning that H1N1 flu can cause pulmonary embolism, surmised as a leading cause of death in this current pandemic.

March 21, 2010 worldwide update by the U. N .' s World Health Organization ( WHO ) states that " 213 countries and overseas territories / communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including at least 16, 931 deaths.

As of May 30, 2010 worldwide update by World Health Organization ( WHO ) more than 214 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including over 18, 138 deaths.

Surgical masks were widely used in China, Hong Kong, Vietnam, and Toronto, Canada during outbreaks of the SARS virus, during the 2007 avian bird flu pandemic in Japan, and more recently in the United States and Mexico City during the 2009 H1N1 flu outbreak, also known as the swine flu.

Many western countries wear face masks during flu pandemics such as the swine flu ( H1N1 ) pandemic in 2009 / 10, in places such as America and England people wear N95 or NIOSH masks these are different to the surgical mask as they provide better protection due to their shape and securing straps.

However, the 13th Primary Mathematics World Contest ( 2009 ) was canceled due to the WHO declaring the Influenza A virus subtype H1N1 a pandemic.

NIAID also works closely with partners in academia, industry, government, and non-governmental organizations in multifaceted and multidisciplinary efforts to address emerging health challenges such as the pandemic H1N1 / 09 virus.

* H1N1, which caused the 1918 flu pandemic (" Spanish flu ") and currently is causing seasonal human flu and the 2009 flu pandemic (" swine flu ")

The H1N1 strain used in these compositions is the same strain used in the 2009 flu pandemic vaccine, now known as A ( H1N1 ) pdm09.

PositiveID, in conjunction with RECEPTORS LLC, is also developing a rapid virus detection system for the H1N1 virus and other pandemic illnesses.

The 1957 and 1968 pandemic flu strains were caused by reassortment between an avian virus and a human virus, whereas the H1N1 virus responsible for the 2009 swine flu outbreak has an unusual mix of swine, avian and human influenza genetic sequences.

The H1N1 form of swine flu is one of the descendants of the strain that caused the 1918 flu pandemic.

The 1918 flu pandemic in humans was associated with H1N1 and influenza appearing in pigs ; this may reflect a zoonosis either from swine to humans, or from humans to swine.

This led to the emergence of a new human H1N1 strain, which caused the 2009 pandemic.

In light of the 2009 H1N1 pandemic, the dean of medicine at the University of Calgary, Tomas Feasby, suggested that the fist bump may be a " nice replacement of the handshake " in an effort to prevent transmission of the virus.

More people died of the so-called Spanish flu ( caused by the H1N1 viral strain ) pandemic in the single year of 1918 than during all four-years of the Black Death ( Bubonic plague ) scourge that lasted from 1347 to 1351 ( although a significantly higher percentage of the world ’ s population died of the plague than of Spanish flu ).

In a virtual press conference in May 2009 on the influenza pandemic Dr Keiji Fukuda, Assistant Director-General ad Interim for Health Security and Environment, WHO said " An easy way to think about pandemic ... is to say: a pandemic is a global outbreak.

In planning for a possible influenza pandemic the WHO published a document on pandemic preparedness guidance in 1999, revised in 2005 and in February 2009, defining phases and appropriate actions for each phase in an aide memoir entitled WHO pandemic phase descriptions and main actions by phase.

The 2009 revision, including definitions of a pandemic and the phases leading to its declaration, were finalized in February 2009.

Its links with the IAEA and distribution of contraception have both proved controversial, as have guidelines on healthy eating and the 2009 flu pandemic.

On the contrary, the swine flu was declared a pandemic by the World Health Organization in 2009.

Bethel is mentioned in the 2007 film I Am Legend as a fortified colony of uninfected survivors from a " cancer cure " virus that mutates and becomes a pandemic, killing over 90 % the human populace of the world in 2009.

In June 2010, a team at the Mount Sinai School of Medicine reported the 2009 flu pandemic vaccine provided some cross-protection against the 1918 flu pandemic strain.

Government and airport personnel used thermography to detect suspected swine flu cases during the 2009 pandemic.

During the 2009 swine flu pandemic, Tusk defended his government's decision not to purchase swine flu vaccine, citing the lack of testing by pharmaceutical companies and its unavailability to be purchased freely through the market.

The World Health Organization ( WHO ) produce a six-stage classification that describes the process by which a novel influenza virus moves from the first few infections in humans through to a pandemic.

This starts with the virus mostly infecting animals, with a few cases where animals infect people, then moves through the stage where the virus begins to spread directly between people, and ends with a pandemic when infections from the new virus have spread worldwide.

HIV, the virus that causes AIDS, is currently a pandemic, with infection rates as high as 25 % in southern and eastern Africa.

The emergence of antivirals is the product of a greatly expanded knowledge of the genetic and molecular function of organisms, allowing biomedical researchers to understand the structure and function of viruses, major advances in the techniques for finding new drugs, and the intense pressure placed on the medical profession to deal with the human immunodeficiency virus ( HIV ), the cause of the deadly acquired immunodeficiency syndrome ( AIDS ) pandemic.

* November: The SCA virus, a boot sector virus for Amigas appears, immediately creating a pandemic virus-writer storm.

World War I did not cause the flu, but the close troop quarters and massive troop movements hastened the pandemic and probably both increased transmission and augmented mutation ; it may also have increased the lethality of the virus.

Similarities between a reconstruction of the virus and avian viruses, combined with the human pandemic preceding the first reports of influenza in swine, led researchers to conclude the influenza virus jumped directly from birds to humans, and swine caught the disease from humans.

While the virus is currently mainly animal-human transmissible ( with only two well documented cases of human-human have been to the present known of to scientists ), experts expect an avian flu pandemic that would affect the region should the virus morph to be human-human transmissible.

The British virologist, John Oxford, and other researchers, have suggested that the Étaples troop staging camp was at the centre of the 1918 flu pandemic or at least home to a significant precursor virus to it.

* H5N1, a subtype of influenza A virus endemic to birds, currently perceived as a significant emerging pandemic threat.

Recent influenza research into the genes of the Spanish flu virus shows it to have genes adapted to both birds and humans, with more of its genes from birds than less deadly later pandemic strains.

Until recently, such combinations were believed to have caused the infamous Spanish Flu outbreak of 1918 which killed 40 ~ 100 million people worldwide ; however more recent research suggests the 1918 pandemic was caused by the antigenic drift of a fully avian virus to a form that could infect humans efficiently.

If this new virus causes illness in people and can be transmitted easily from person to person, an influenza pandemic can occur.

As such, it is a focal point in global concerns of avian influenza ( H5N1 ), as a major outbreak here could spread the virus across Europe and Asia, further increasing the chances of a pandemic.

" Blakemore suggests that it would be necessary to perform research on great apes if humans were threatened by a pandemic virus that afflicted only humans and other great apes.

It is likely that the AIDS virus served as an inspiration for this fictional pandemic.