date:Feb 11, 2014
ization because the infections remain sporadic and the virus doesn't transmit effectively among human.
He Jianfeng, chief expert at the Guangdong province Center for Disease Control and Prevention, said it is not cost-effective to carry out large-scale immunization right now. But he emphasized that an H7N9 vaccine could help guarantee large-scale immunization when the virus is found to be able to transmit among human effectively.
He doesn't expect the virus to mutate so much as to make the t