New bird flu viruses in ducks after vaccines largely prevented H7N9 in chickens

In response to bird flu pandemics starting in 2013, officials in China introduced a new vaccine for chickens in September 2017. Recent findings suggest that the vaccine largely worked but detected two new genetic variations of the H7N9 and H7N2 subtypes in unvaccinated ducks.

from Top Health News -- ScienceDaily https://ift.tt/2IlgApX