death '' `` At this stage the cause of this tragic death is unknown , '' the company said in a statement posted on their Web site . `` Following immediate quarantine of the batch involved last night , we have taken the decision to voluntarily recall this batch as a further precautionary measure while the investigation into the circumstances surrounding Natalie 's death is conducted . '' On Tuesday several NHS clinics and schools indefinitely postponed immunizations . `` As a purely precautionary measure , we have asked the NHS to quarantine all stocks of HPV vaccine from the batch related to this case , '' a spokesperson for the NHS said . `` Where the local NHS has supplies of vaccine from other production batches , they should continue with the vaccination program . '' Many clinics were forced to close as they checked the numbers on their batches of the vaccine . What is HPV ? HPV stands for human Papilloma virus . Although there are more than 100 types of HPV , only a few of them are known to cause cervical cancer . Most strains of HPV are harmless or cause genital warts . HPV
LONDON , England -LRB- CNN -RRB- -- The death of a 14-year-old girl in England after she received a vaccination for Human Papilloma virus -LRB- HPV -RRB- has prompted a widespread freeze on the country 's national vaccination program . Millions of girls have received vaccinations for HPV since 2008 , the virus that causes 99 percent of cervical cancers . More than 1.4 million girls have received the vaccination in England since the National Health Service -LRB- NHS -RRB- started administering it in September 2008 . Natalie Morton 's sudden death Monday occurred within hours after she received a shot of the vaccine Cervarix at the NHS at her school in Coventry . Three other girls at the Blue Coat Church of England school suffered mild symptoms of dizziness and nausea after receiving the vaccine , according to media reports . It remains unclear if the vaccine caused Morton 's death . Only an autopsy will be able to determine the exactly cause of death . Glaxo Smith Kline , the manufacturer of Cervarix , issued a recall of the batch of vaccine used in Coventry as a `` precautionary measure . '' Watch reaction to Natalie Morton 's