Colour enhanced Transmission Electron Micrograph (TEM) of virions from a Novel Flu H1N1 isolate. Novel H1N1 (referred to as swine flu early on) is a new influenza virus causing illness in people. This new virus was first detected in people in the United States in April 2009. This virus is spreading from person-to-person worldwide, probably in much the same way that regular seasonal influenza viruses spread. On June 11, 2009, the World Health Organization (WHO) signalled that a pandemic of novel H1N1 flu was underway. This virus was originally referred to as swine flu because laboratory testing showed that many of the genes in this new virus were very similar to influenza viruses that normally occur in pigs (swine) in North America. But further study has shown that this new virus is very different from what normally circulates in North American pigs. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source / Cynthia Goldsmith / CDC |
Bildgröße: | 3726 px × 3600 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |