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  2. Hvitserk - Wikipedia

    en.wikipedia.org/wiki/Hvitserk

    Hvitserk is attested to by the Tale of Ragnar's Sons (Ragnarssona þáttr).He is not mentioned in any source that mentions Halfdan Ragnarsson, one of the leaders of the Great Heathen Army that invaded the Kingdom of East Anglia in 867, or vice versa, which consequently led some scholars to suggest that they are the same individual with Hvitserk being only a nickname.

  3. Halfdan Ragnarsson - Wikipedia

    en.wikipedia.org/wiki/Halfdan_Ragnarsson

    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 ...

  4. Ivar the Boneless - Wikipedia

    en.wikipedia.org/wiki/Ivar_the_Boneless

    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 ...

  5. Vikings' Katheryn Winnick Opens Up About the 'Epic ... - AOL

    www.aol.com/news/vikings-katheryn-winnick-opens...

    The following contains Valhalla lotta spoilers from the Jan. 8 episode of History's Vikings. This Wednesday on History's Vikings, an inevitability became a tragic reality— and a prophecy was ...

  6. Sigurd Snake-in-the-Eye - Wikipedia

    en.wikipedia.org/wiki/Sigurd_Snake-in-the-Eye

    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 ...

  7. Cutter Laboratories - Wikipedia

    en.wikipedia.org/wiki/Cutter_Laboratories

    The mistake produced 120,000 doses of polio vaccine that contained live polio virus. Of children who received the vaccine, 40,000 developed abortive poliomyelitis (a form of the disease that does not involve the central nervous system), 56 developed paralytic poliomyelitis—and of these, five children died from polio. [2]

  8. Wells-Riley model - Wikipedia

    en.wikipedia.org/wiki/Wells-Riley_model

    The Wells-Riley model is a simple model of the airborne transmission of infectious diseases, [1] [2] developed by William F. Wells and Richard L. Riley for tuberculosis [3] and measles. [ 4 ] Wells-Riley can also be applied to other diseases transmitted in the air, such as COVID-19 .

  9. Compartmental models in epidemiology - Wikipedia

    en.wikipedia.org/wiki/Compartmental_models_in...

    For the full specification of the model, the arrows should be labeled with the transition rates between compartments. Between S and I, the transition rate is assumed to be (/) / = /, where is the total population, is the average number of contacts per person per time, multiplied by the probability of disease transmission in a contact between a susceptible and an infectious subject, and / is ...