Only influenza A viruses infect nonhuman hosts, and a reassortment of genes can occur ... Although the basic biology and genetics of influenza viruses are fairly well understood, heading off ...

These findings suggest that genetic reassortment events with the HA and NA segments contribute to their genetic diversity and the adaptability of these mutated viruses to infect new hosts.

This latter process is known as genetic reassortment, and it usually happens when an organism is infected with at least two different viruses at the same time. Some experts suspect that H5N9 may ...

That scenario is caused by “reassortment,” the exchange of genetic material when hosts are infected with multiple versions of a virus. The U.S. Agriculture Department’s Animal and Plant ...