Influenza Clinical Trial
Official title:
Randomized Trial of High Dose Influenza Vaccine in Long Term Care Setting
The purpose of the study is to compare the performance of two currently available influenza (flu) vaccines. This study will try and determine if the high dose flu vaccine provides protection that is the same or better than that of regular dose flu vaccine. Both the regular dose and the high dose flu vaccines are approved by the FDA for use in older adults.
Influenza and pneumonia are the fifth leading cause of death in the United States, the leading cause of vaccine preventable death, and the leading cause of infection related deaths among nursing home residents(Nace, Drinka et al.2010). Each year, an estimated 36,000 individuals die from seasonal influenza and over 90% of these deaths occur among older adults, primarily the frail older adults residing in LTC settings(Fiore,Uyeki et al. 2010).Vaccination is the most effective means of preventing influenza (Nichol and Treanor 2006). Despite increasing success in immunizing LTC residents though, outbreaks continue to occur annually with case fatality rates ranging between 5-55% (Nace 2008). Older adults have a reduced response to influenza vaccination, in part due to age related immunosenescence (Keitel, Atmar et al. 1121; Skowronski, Tweed et al. 2008). It is widely recognized that more effective vaccine options are needed for frail older adults. One option is to increase the hemagglutinin (HA) dose in influenza vaccines in an effort to increase antibodies to hemagglutinin. To date, no studies have evaluated the effectiveness of the HDIV among LTC residents. ;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Prevention
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