The challenges of clinical trials in the exclusion zone: the case of the frail elderlyIman Ridda
The Children Hospital, National Center for Immunisation Research and Surveillance, Westmead, New South Wales, Australia
Australas J Ageing 27:61-6. 2008
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Immunological responses to pneumococcal vaccine in frail older peopleI Ridda
National Centre for Immunization Research and Surveillance Sydney, NSW, Australia
Vaccine 27:1628-36. 2009
..However, the elderly are a heterogeneous group and measures of overall frailty may be a better indicator of disease susceptibility (or vaccine response) than chronological age alone...
A qualitative study to assess the perceived benefits and barriers to the pneumococcal vaccine in hospitalised older peopleI Ridda
National Centre for Immunisation Research and Surveillance Sydney, NSW, Australia
Vaccine 27:3775-9. 2009
..Pneumococcal vaccine is now recommended for all people aged 65 years and over in Australia, yet many in this age group remain unvaccinated, especially those from Non-English Speaking Backgrounds (NESB)...
Difficulties in recruiting older people in clinical trials: an examination of barriers and solutionsI Ridda
National Centre for Immunisation Research and Surveillance Sydney, NSW, Australia
Vaccine 28:901-6. 2010
..Population-specific recruitment strategies, simple informed-consent processes, and effective communication between the researcher and subject are effective strategies to overcome these barriers...
Differences in attitudes, beliefs and knowledge of hospital health care workers and community doctors to vaccination of older peopleI Ridda
National Centre for Immunisation Research and Surveillance, Sydney, NSW, Australia The University of Sydney, NSW, Australia
Vaccine 26:5633-40. 2008
..Since 2005 a publicly funded program offering free pneumococcal vaccine for elderly people over 65 years has been implemented in Australia...
Lack of pneumococcal carriage in the hospitalised elderlyI Ridda
National Centre for Immunisation Research and Surveillance, Sydney, NSW, Australia
Vaccine 28:3902-4. 2010
..We studied pneumococcal carriage among participants in a pneumococcal immunisation study in the frail elderly...
Factors associated with pneumococcal immunisation among hospitalised elderly persons: a survey of patient's perception, attitude, and knowledgeI Ridda
National Centre for Immunisation Research and Surveillance, Sydney, NSW, Australia
Vaccine 26:234-40. 2008
..To investigate attitudes, perceptions and knowledge of elderly hospital patients in regard to vaccination in general and pneumococcal vaccination in particular...
Predictors of pneumococcal vaccination uptake in hospitalized patients aged 65 years and over shortly following the commencement of a publicly funded national pneumococcal vaccination program in AustraliaIman Ridda
National Centre for Immunisation Research and Surveillance, Sydney NSW, Australia
Hum Vaccin 3:83-6. 2007
..However, demented patients and the very elderly remain under-vaccinated, despite being admitted to hospital for active management of acute conditions...