Search results
Results from the WOW.Com Content Network
Martínez López de Letona J. (2007). La historia natural de la enfermedad como fuente esencial para la formulación del pronóstico (PDF). Madrid: HM. ISBN 978-84-612-7199-3. Archived from the original (PDF) on 2013-08-18. Bhopal, R. (2008). Concepts of Epidemiology. Integrating the ideas, theories, principles and methods of epidemiology (2nd ...
This is a timeline of influenza, briefly describing major events such as outbreaks, epidemics, pandemics, discoveries and developments of vaccines.In addition to specific year/period-related events, there is the seasonal flu that kills between 250,000 and 500,000 people every year and has claimed between 340 million and 1 billion human lives throughout history.
The second wave came with the influx of influenza A viruses, such as H1N1. [3] According to preliminary burden estimates for the 2019–2020 flu season (October 1, 2019 through April 4, 2020) there were between 39 and 56 million flu cases; 18–26 million doctor visits; 410,000 to 740,000 hospitalizations, and between 24,000 and 62,000 deaths.
A 2009 study in Influenza and Other Respiratory Viruses based on data from fourteen European countries estimated a total of 2.64 million excess deaths in Europe attributable to the Spanish flu during the major 1918–1919 phase of the pandemic, in line with the three prior studies from 1991, 2002, and 2006 that calculated a European death toll ...
2–3 million 1–1.6% of Russian population [14] 1918–1922 Russia: 13 Cocoliztli epidemic of 1576: Cocoliztli 2–2.5 million 50% of Mexican population [12] 1576–1580 Mexico 14 1772–1773 Persian Plague: Bubonic plague 2 million – 1772–1773 Persia: 15 735–737 Japanese smallpox epidemic: Smallpox 2 million 33% of Japanese population ...
Influenza A viruses can occasionally be transmitted from wild birds to other species, causing outbreaks in domestic poultry, and may give rise to human influenza pandemics. [1] [2] The propagation of influenza viruses throughout the world is thought to be in part by bird migrations, though commercial shipments of live bird products might also ...
Influenza spreads around the world in yearly outbreaks, resulting in three to five million cases of severe illness, and 250 to 500 thousand deaths. [1] About 20% of unvaccinated children, and 10% of unvaccinated adults are infected each year.
Influenza C virus is subclassified into six genetic/antigenic lineages. [12] [26] Influenza D virus has been isolated from pigs and cattle, the latter being the natural reservoir. Infection has also been observed in humans, horses, dromedary camels, and small ruminants such as goats and sheep.