A seventh person died in on Sunday from a new strain of deadly
That means about thirty percent of those with severe infections die, which is relatively high, Yanzhong Huang, director of global health studies at Seton Hall University, told Bloomberg News on Monday.
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The strain currently only spreads from bird to human.
The key worry now is that H7N9 could mutate and begin spreading from human to human, though no cases have been reported yet.
There's is a concern, however, that milder cases of bird flu have been going undetected.
Laurie Garrett, senior editor for the Council on Foreign Relations, pointed out on Twitter that even patients who are seriously ill test "weakly positive." That means people could have the virus, but not know it until they begin showing violent flu-like symptoms. By then, it can be too late.
Additionally, China expert Victor Shih also said that patients are deterred from getting treated because of the outrageous hospital fees.