ÎçÒ¹¸£Àû1000¼¯ºÏBird flu strain hitting China may be getting more dangerous Already this winter H7N9 has caused 424 known cases in humans, and it seems to be acquiring a deadly mutation that will make it spread more quickly News
ÎçÒ¹¸£Àû1000¼¯ºÏHidden viral protein brings universal flu jab closer Flu subtly changes each year to stop us becoming fully immune. A normally hidden protein that stays the same in all flu viruses could make a universal vaccine News