Here’s an except from ScienceDaily.com with the original presentation information;

Children Who Get Flu Vaccine Have Three Times Risk Of Hospitalization For Flu, Study Suggests

ScienceDaily (2009-05-20) — The inactivated flu vaccine does not appear to be effective in preventing influenza-related hospitalizations in children, especially the ones with asthma. In fact, children who get the flu vaccine are more at risk for hospitalization than their peers who do not get the vaccine, according to new research. While these findings do raise questions about the efficacy of the vaccine, they do not in fact implicate it as a cause of hospitalizations, according to researchers.

Original presentation made at the American Thoracic Society’s International Conference in San Diego, CA (May 15-20, 2009):

Flu Vaccination in Asthmatics: Does It Work?
Am J Respir Crit Care Med 179;2009:A5118