US nursing home residents account for nearly 40% of nation's death toll
Some families and nurses fear those in 'fragile health' could be put at risk by the Pfizer/BioNTech vaccine, and claim it has been 'rushed'
'I will not be the test dummy,' said one respondent to survey by National Association of Health Care Assistants
Others are keen for 'light at the end of the tunnel' that could allow them to rejoin children and grandchildren
In on-going study of 44,000 people, U.S. Food and Drug Administration found vaccine safe and more than 90% effective, including the elderly
Experts say 70% of the population need to receive vaccine for it to be successful