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Because Halfdan is not mentioned in any source that mentions Hvitserk, some scholars have suggested that they are the same individual – a possibility reinforced by the fact that Halfdan was a relatively common name among Vikings and Hvitserk "white shirt" may have been an epithet or nickname that distinguished Halfdan from other men by the ...
Ivar the Boneless (Old Norse: Ívarr hinn Beinlausi [ˈiːˌwɑrː ˈhinː ˈbɛinˌlɔuse]; died c. 873), also known as Ivar Ragnarsson, was a Viking leader who invaded England and Ireland. According to the Tale of Ragnar Lodbrok , he was the son of Aslaug and her husband Ragnar Loðbrok , and was the brother of Björn Ironside , Halvdan (or ...
In addition, a person is sometimes infected with both hepatitis B virus (HBV) and HIV, and this population (about 2.7 million) accounts for about 1% of the total HBV infections. [ 23 ] Hepatitis C : According to the World Health Organization, there are approximately 58 million people with chronic hepatitis C, with about 1.5 million new ...
The Kermack–McKendrick epidemic model was successful in predicting the behavior of outbreaks very similar to that observed in many recorded epidemics. [7] Recently, agent-based models (ABMs) have been used in exchange for simpler compartmental models. [8]
Viral phylodynamics is the study of how epidemiological, immunological, and evolutionary processes act and potentially interact to shape viral phylogenies. [1] Since the term was coined in 2004, research on viral phylodynamics has focused on transmission dynamics in an effort to shed light on how these dynamics impact viral genetic variation.
Sigurd married Blaeja, the daughter of king Ælla of Northumbria and they had two children, Harthacanute and Áslaug Sigurðardóttir, who was married to Helge of the Dagling lineage. [ 11 ] Helge may have briefly succeeded his purported father-in-law as king of Denmark before being overthrown by Olof , a Viking chief who swept down from Sweden ...
Young people with polio receiving physiotherapy in the 1950s. The social history of viruses describes the influence of viruses and viral infections on human history. Epidemics caused by viruses began when human behaviour changed during the Neolithic period, around 12,000 years ago, when humans developed more densely populated agricultural communities.
By 1928 enough was known about viruses to enable the publication of Filterable Viruses, a collection of essays covering all known viruses edited by Thomas Milton Rivers (1888–1962). Rivers, a survivor of typhoid fever contracted at the age of twelve, went on to have a distinguished career in virology. In 1926, he was invited to speak at a ...