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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 ...
A PNAS report in September 2020 confirmed that the virus is much more dangerous for the elderly than the young, noting that about 70% of all U.S. COVID-19 deaths had occurred to those over the age of 70. [94] As of early August 2020, among the 45 countries that had over 50,000 cases, the U.S. had the eighth highest number of deaths per-capita.
In these cases, the basic reproduction number of the virus, which is the average number of additional people that a single case will infect without any preventative measures, can be as high as 203.9. [9] [10] Interhuman transmission is a synonym for HHT. [11]
In Russia, 13 children had been treated (5 with intensive care) by mid-June for a multisystem inflammatory syndrome at the Morozov Children's Hospital in Moscow, including a 2-year-old girl with the COVID-19 infection who died on 23 May following an initial diagnosis of suspected Kawasaki disease. [90]
The virus killed 13 people – half of those it infected, for a mortality rate of 50%. [1] [2] The cause of the outbreak was found to be a previously unknown species of hantavirus, which was responsible for a new form of illness known as hantavirus pulmonary syndrome (HPS). The virus is carried by deer mice.
Astroviruses (Astroviridae) are a type of virus that was first discovered in 1975 using electron microscopes following an outbreak of diarrhea in humans. [1] In addition to humans, astroviruses have now been isolated from numerous mammalian animal species (and are classified as genus Mamastrovirus) and from avian species such as ducks, chickens, and turkey poults (classified as genus ...
These have included SARS, pandemic influenza, BSE/vCJD, foot-and-mouth disease, HIV and smallpox, in addition to bioterrorism. [ 9 ] Ferguson was part of Roy Anderson 's group of infectious disease scientists who moved from the University of Oxford to Imperial College in November 2000, and started working on modelling the 2001 United Kingdom ...
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 .