The latest case of bird flu in China, which appears to be related to a substrain of the H10N8 virus, is already displaying some worrying characteristics, an expert in infectious diseases has said.
Dr Jeremy Farrar, director of the Wellcome Trust, told BBC News:
We should always be worried when viruses cross the species barrier from birds or animals to humans as it is very unlikely that we will have prior immunity to protect us.
We should be especially worried when those viruses show characteristics that suggest they have the capacity to replicate easily or to be virulent or resistant to drugs. This virus ticks several of these boxes and therefore is a cause for concern.
More top news
Daughter whose mother was left for hours on a hospital trolley in A&E has campaigned tirelessly for change - and with some success.
After unseasonably windy weather today with gales and big battering waves along exposed western coastal spots a little calmer into tomorrow
Sinkhole causes two lanes to collapse but luckily no injuries have been reported.