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CDC - Influenza AH1N2 Viruses, United Kingdom, 2001–02 Influenza Season (4196 words) |
 | The reassortment event is estimated to have occurred between 1999 and early 2001, and the emergence of H1N2 viruses in humans reinforces the need for frequent surveillance of circulating viruses. |
| Reassortant H1N2 viruses have previously been isolated from sporadic cases in humans and were not maintained in circulation in humans (9). |
| Although changes in receptor binding and the interaction between the HA and NA proteins of H1N2 reassortants may have facilitated the emergence of the H1N2 viruses, the contribution of the internal proteins to the replicative efficiency and transmission of these viruses and their interaction with the surface glycoproteins is unknown. |
| Reassortment - Wikipedia, the free encyclopedia (205 words) |
| Reassortment is the mixing of the genetic material of two similar viruses that are infecting the same cell. |
| Reassortment is responsible for some of the major genetic shifts in the history of the influenza virus. |
| Notably, the 1957 and 1968 pandemic flu strains were caused by reassortment between an avian virus and a human virus. |
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