H1N1 flu virus particles (virions, blue) on a cell (purple), coloured scanning electron micrograph (SEM). This is the Neurotrophic Wilson-Smith (NWS)

---

H1N1 flu virus particles (virions, blue) on a cell (purple), coloured scanning electron micrograph (SEM). This is the Neurotrophic Wilson-Smith (NWS) strain of an influenza A virus subtype H1N1. Influenza A can infect multiple species and is the most virulent human pathogen of the three influenza types (A, B and C), meaning that it has the potential to cause a pandemic. Magnification: x15,000 when printed 10 centimetres wide.

---

Size: 4843px × 3923px
Photo credit: © NIBSC/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: attached, biological, biology, cell, coloured, epidemiology, false-coloured, flu, h1n1, influenza, medical, medicine, microbiology, multiple, neurotrophic, nws, orthomyxovirus, particle, particles, rna, sem, strain, subtype, swine, virion, virions, virology, virus, viruses, wilson-smith