Washington Post Staff Writer
Saturday, April 24, 2010
Federal health officials are investigating the first hints of any possible significant complications from the H1N1 vaccine, but stressed that the concerns will probably turn out to be a false alarm.
The latest analysis of data has detected what could be a somewhat elevated rate of Guillain-Barré syndrome, which can cause paralysis and death; Bell’s palsy, a temporary facial paralysis; and thrombocytopenia, which is a low level of blood platelets, officials reported Friday. The data is being collected through five of the networks the government is using to monitor people who were inoculated against the swine flu.