Diarist Anne Frank likely died a month earlier than previously thought meaning there was little chance of her surviving the Holocaust , according to new research . It was previously believed that the Jewish teenager , who was sent to the Bergen-Belsen concentration camp , died of typhus on 31 March 1945 , two weeks before the camp was liberated . However a new study puts the date of her death at some point in mid February , meaning that even if British troops had reached the camp a little sooner , she would likely not have survived . Scroll down for video . Anne Frank ( pictured ) likely died of typhus inside the Bergen-Belsen concentration camp in mid February 1945 , a study has shown , not on March 31 as previously thought . Anne 's diary , which documents how her family went into hiding from the Nazis in the Netherlands during the Second World War , became a bestseller when it was published after then end of the war . The book documents how Anne , her sister Margot and her family went into hiding in a canal house , but were eventually betrayed and sent to Bergen-Belsen , where she and her sister perished . Anne Frank wrote her diary while in hiding from Nazi persecution during World War II . By 1940 the Nazis had occupied the Netherlands , leaving the family trapped . In 1942 the family went into hiding in secret rooms of Otto Frank 's office building . But after two years the group were anonymously betrayed and were sent to their deaths at the Bergen-Belsen concentration camp , where Anne died of typhus in 1945 . Otto Frank , Anne 's father , returned to Amsterdam after the war and discovered her diary had been saved . It was published in 1947 , leading to her posthumous fame . After the war the Dutch government set the official date of her death as March 31 , based on survivors accounts stating that the girls died sometime in March . Because the Allies liberated the camp on April 15 , this added a bitter twist to her tale - the thought that if she could have hung on a few weeks longer she might have been saved . However , Erika Prins , a researcher at the Anne Frank House museum , has now revised that date having studied witness accounts , archives , and conducted at least one new interview . Ms Prins said she now believes that Anne and her sister began exhibiting symptoms of typhus at the beginning of February . According to Dutch health authorities , most patients do not live for more than 12 days after that . 'In view of this , the date of their death is more likely to be sometime in February . The exact date is unknown , ' the study says . Ms Prins added : 'It was horrible . It was terrible . And it still is . But when you say they died at the end of March , it gives you a feeling that they died just before liberation . Bergen-Belsen was liberated in April 1945 , meaning if Anne died in March , then she was two weeks from rescue . But this new study shows she was months from safety ( Anne pictured left , with father Otto , and right ) Anne and her sister Margot died during a typhus epidemic that swept through the Bergen-Belsen camp in 1945 , killing an estimated 35,000 people ( pictured , typhus patients inside the camp ) 'So maybe if they 'd lived two more weeks ... well , that 's not true anymore . ' It is unlikely that the exact date of Anne 's death will ever be uncovered , as disease was so common in the camps that individuals passing away often went unnoticed . In the words of one witness , Rachel van Amerongen , who knew the Frank sisters and was cited by researchers , 'one day they simply were n't there anymore . ' Anne and Margot were just two of an estimated 35,000 deaths at Bergen-Belsen when a typhus epidemic swept through the camp in early 1945 .
Anne Frank died from typhus in the Bergen-Belsen concentration camp . Previously thought she died on in March , weeks before camp was liberated . But new research has shown she likely died some time in mid February . Even if British troops had arrived earlier , she could n't have been saved .