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Martha Nelson, an evolutionary biologist in the Intramural Research Program at the US National Institute of Allergy and Infectious Diseases

Martha Nelson

Martha Nelson is an evolutionary biologist in the Intramural Research Program at the US National Institute of Allergy and Infectious Diseases. 

Articles by Martha Nelson
Illustration of a targeted virus over a world map
The Hunt for a Pandemic’s Origins
Martha Nelson | Jan 4, 2022 | 10+ min read
Dozens of researchers, including myself, worked for years to uncover that swine flu had leapt to humans from a pig in Mexico in 2009. We learned a lot about influenza evolution, pig farming, and outbreak risk along the way.
Illustration of a world map showing a truck going from the US to Mexico, a plane going from Europe to Mexico, and a pig surrounded by various viruses in Mexico
Infographic: How H1N1 Came to Spark a Pandemic in 2009
Martha Nelson | Jan 4, 2022 | 2 min read
The pathogen known as swine flu evolved in pigs in Mexico following imports of the livestock from the US and Europe.
An illustration with a world map, pigs, and viruses
Timeline: Investigating the Origins of the 2009 Pandemic
Martha Nelson | Jan 4, 2022 | 3 min read
Seven years of surveillance and research revealed the complex history of the H1N1 virus that leapt from pigs to humans and sparked the global swine flu outbreak.
a veterinarian in a white hazmat suit holding a small pig
The Long Journey to Resolve the Origins of a Previous Pandemic
Martha Nelson | Sep 2, 2021 | 10+ min read
Dozens of researchers, including myself, worked for years to uncover that swine flu had leapt to humans from a pig in Mexico in 2009. We learned a lot about influenza evolution, pig farming, and outbreak risk along the way.
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