"Oculo-Respiratory Syndrome: a New Influenza Vaccine-Associated Adverse Event?"
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(03/03) Vol. 36, No. 6, P. 705; Skowronski,
Danuta M.; Strauss, Barbara; De Serres, Gaston
Doctors in Canada noticed in the winter of
2000-2001 a new adverse event associated with the supply of influenza vaccine
from one manufacturer, oculo-respiratory syndrome (ORS). Researchers noted the
case definition for ORS includes bilateral conjunctivitis, facial edema, or
respiratory symptoms beginning between two hours and 24 hours after influenza
vaccination and ending 48 hours after onset of disease. The researchers sought
to determine the frequency and severity of the event, contacting 609 patients of
an eligible 769 persons through a standardized telephone interview. Of
respondents, 13 percent said that they contracted ORS within two hours of
vaccination, 27 percent said they experienced symptoms for more than 48 hours,
and 42 percent felt that the symptoms they experienced were severe. As a
result, the ORS case definition for surveillance for the 2001-2002 influenza
vaccination season included onset within 24 hours of vaccination, with no
restriction of symptom duration. With this information in mind, the scientists
conclude that ORS should be included in annual influenza vaccine safety
monitoring programs.
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