A girl who died shortly after being given a cervical cancer vaccine had a "serious underlying medical condition", an NHS Trust has said.
NHS Coventry said the vaccination was "most unlikely to have caused the death" of Natalie Morton, 14.
She was given the Cervarix jab at Coventry's Blue Coat School on Monday and fell ill a few hours later.
Earlier the government said a national cervical cancer immunisation programme should continue.
Dr Caron Grainger, joint director of public health for NHS Coventry and Coventry City Council, said the results of a preliminary post-mortem examination had "revealed a serious underlying medical condition which was likely to have caused death".
"We are awaiting further test results which will take some time," she said. "However indications are that it was most unlikely that the HPV vaccination was the cause of death."
The injection - part of a national immunisation programme - protects against the human papilloma virus (HPV), a sexually transmitted disease linked to most cervical cancers. read more
