US swine flu vaccine too late to beat autumn wave

 作者:戴揉     |      日期:2019-03-08 01:19:09
PRESIDENT Barack Obama’s decision last week to label swine flu a national emergency will likely increase demand for a vaccine that is already in short supply. Yet by the time large amounts of vaccine arrive, it may be too late to stop most infections. On 23 October, Tom Frieden, head of the Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia, reported that the US had received 27.4 million doses of vaccine. This is not enough even for the country’s 42 million most vulnerable people: pregnant women, people caring for babies, children under 4,