Related Experiment Video
Updated: May 29, 2026

10:44
Influenza A Virus Studies in a Mouse Model of Infection
Published on: September 7, 2017
Insights on influenza pathogenesis from the grave
Jeffery K Taubenberger1, John C Kash
1Viral Pathogenesis and Evolution Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 33 North Drive, Room 3E19A.2, MSC 3203, Bethesda, MD 20892-3203, USA. taubenbergerj@niaid.nih.gov
Virus Research
|September 20, 2011
Summary
The 1918 influenza pandemic, causing 50 million deaths, is being studied to prevent future outbreaks. Researchers reconstructed the 1918 virus using genetic sequencing and reverse genetics.
Area of Science:
- Virology
- Epidemiology
- Public Health
Background:
- The 1918-1919 influenza pandemic was the deadliest in history, causing an estimated 50 million deaths globally.
- Understanding the 1918 virus is crucial for preventing future pandemics.
Purpose of the Study:
- To investigate the origin and pathogenicity of the 1918 influenza virus.
- To utilize insights from the 1918 pandemic for future pandemic preparedness.
Main Methods:
- Sequencing of viral RNA fragments from autopsy tissues of 1918 victims.
- Reconstruction of infectious 1918 influenza viruses using reverse genetics.
Main Results:
- Complete genome of the 1918 influenza virus was determined in 2005.
- Infectious viruses with 1918 gene segments were successfully reconstructed.
Conclusions:
- These studies provide significant information on the 1918 virus's origin and pathogenicity.
- Further research is needed to address remaining questions regarding the 1918 influenza virus.
Related Concept Videos
Influenza
Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...
Leaky Scanning
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
Inhibitors Of Virion Release
Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...
Malaria
Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...

