Clinical Infectious Diseases
15 May 2010  Volume 50, Number 10
http://www.journals.uchicago.edu/toc/cid/current

Articles and Commentaries
Immunogenicity and Safety of Intradermal Influenza Vaccination in Healthy Older Adults
Ru-Chien Chi, Michael T. Rock, and Kathleen M. Neuzil

Reduced dose influenza vaccine by intradermal or intramuscular injection generated postvaccination antibody titers generally comparable to full‐dose intramuscular vaccination in elderly adults. Results support the use of a reduced dose of influenza vaccine by either route during vaccine shortages.