Why are Australian church leaders opposing the Oxford coronavirus vaccine?

Australian church leaders have raised objections to a potential Covid-19 vaccine under development at the University of Oxford over concerns it contains cell lines “from an electively aborted human foetus.” The objections were sent in a letter to the prime minister, Scott Morrison, last week, cosigned by Catholic archbishop of Sydney Anthony Fisher, Anglican archbishop of Sydney Glenn Davies, and Greek Orthodox archbishop of Australia Makarios Griniezakis. However, scientists say the development process is a proven method and church priorities should be on ensuring public health against the coronavirus. The Vatican itself has in the past released statements permitting the use of vaccines drawn from foetal cell lines if no alternatives are available.