Is Johan Hultin still alive?
January 22, 2022Johan Hultin / Date of death
Who discovered influenza?
While researching at the Rockefeller Institute for Medical Research, Shope took lung samples from infected Iowa pigs. He was able to isolate the rod-shaped bacterium that seemed always to correlate with their influenza.
What cells do flu viruses infect?
Influenza virus infects respiratory epithelial cells that line the upper (including nasal) through lower (to the alveoli) respiratory tract. A key parameter in determining the extent of associated disease is the degree to which the lower respiratory tract becomes invaded by the virus [7].
How did Johan Hultin discover the Spanish flu?
In 1997, Dr. Hultin saw an article in Science magazine by a scientist who had obtained lung tissue from soldiers who died of the flu in 1918 and was able to develop a partial sequence of the virus’s genetic code. He corresponded with the author, Jeffery K.
Why did Hultin travel to Brevig?
The grave was frozen in permafrost and left untouched until 1951. That year, Johan Hultin, a 25-year-old Swedish microbiologist and Ph. D. student at the University of Iowa, set out on an expedition to Brevig Mission in the hopes of finding the 1918 virus and in the process unearth new insights and answers.
What animal did influenza come from?
The predominant natural reservoir of influenza viruses is thought to be wild waterfowl (Webster et al. 1992). Periodically, genetic material from avian virus strains is transferred to virus strains infectious to humans by a process called reassortment.
Is the flu RNA or DNA?
stranded RNA
All influenza viruses consist of single-stranded RNA as opposed to dual-stranded DNA. The RNA genes of influenza viruses are made up of chains of nucleotides that are bonded together and coded by the letters A, C, G and U, which stand for adenine, cytosine, guanine, and uracil, respectively.
Where did the flu come from?
Answer: Influenza is a virus that’s spread from person to person. It originates, actually, among birds and other animals such as pigs, and new viral strains of influenza come to this country and to Europe from Southeast Asia. That’s the global pattern.
When did Johan Hultin discover the Spanish flu?
Johan Hultin, pathologist who helped unearth origins of 1918 influenza pandemic, dies at 97. The first body he found was that of a girl with ribbons in her hair.
Was the Spanish Flu A Biological Weapon?
The origins of the deadly flu disease were unknown but widely speculated upon. Some of the allies thought of the epidemic as a biological warfare tool of the Germans. Many thought it was a result of the trench warfare, the use of mustard gases and the generated “smoke and fumes” of the war.
Who discovered influenza vaccine?
Early 1940s: Jonas Salk, MD (yes, the same doctor who worked on the polio vaccine!) and others work to develop the first inactivated flu vaccine with support from the U.S. Army.
What species do you think the next flu pandemic will be derived from?
An avian virus “jumped to pigs, exchanged some of its genes with previously circulating swine viruses and then jumped from pigs into humans,” according to a statement by the American Society for Microbiology. And now scientists are seeing this pattern again—except this time, the viruses are jumping from pigs to dogs.
Are SARS and flu the same thing?
Influenza requires hemagglutinin and neuraminidase to infect, whereas SARS-CoV-2 uses protein S. Both viruses depend on a viral RNA polymerase to express their proteins, but only SARS-CoV-2 has a proofreading mechanism, which results in a low mutation rate compared to influenza.