Write an article based on this summary:

– A sixth of all cancers worldwide are the result of potentially treatable or preventable infections caused by bacteria, viruses, and parasites, according to a new study. Researchers found that that almost 2 million new cancer cases in 2008 were caused by the human papilloma virus, hepatitis B, hepatitis C, and the stomach bacterium Helicobacter pylori, and that the proportion of cancers caused by infection was three times higher in developing countries, reports the Guardian. A fifth of the 7.5 million cancer deaths worldwide in 2008 were caused by infection-related cancers, the study found. The research shows that vaccines for HPV and hepatitis B should be a priority for health care systems, notes an editorial accompanying the Lancet study. The HPV vaccination program is gaining momentum, but only very slowly, because "it’s hard to get teenagers in for all three doses," and "because HPV is sexually transmitted, it’s evoked a whole bunch of hullaballoo over whether the vaccine promotes promiscuity," the chair of preventive medicine at Vanderbilt University Medical Center tells ABC. Greater progress has been made with the hepatitis B vaccination program, he says, so the occurrence of liver cancer should be "dropping precipitously" over the next 20 years.
Bacteria, viruses and parasites cause around 2m cases of cancer in the world each year, experts believe. 
  
 Of the 7.5m global deaths from cancer in 2008, an estimated 1.5m may have been due to potentially preventable or treatable infections. 
  
 Scientists carried out a statistical analysis of cancer incidence to calculate that around 16% of all cancers diagnosed in 2008 were infection-related. The proportion of cancers linked to infection was three times higher in developing countries than in developed ones. 
  
 Key cancer-causing infectious agents include human papillomavirus (HPV), the gastric bug Helicobacter pylori and the hepatitis B (HBV) and C viruses. 
  
 These four were together believed to be responsible for 1.9m cases of cancer, mostly gastric, liver and cervical cancers. 
  
 Cervical cancer accounted for around half of infection-related women's cancers. In men, more than 80% of infection-related cancers affected the liver, stomach and colon. 
  
 Dr Catherine de Martel and Dr Martyn Plummer, from the International Agency for Research on Cancer in Lyon, wrote in the Lancet Oncology journal: "Infections with certain viruses, bacteria, and parasites are one of the biggest and preventable causes of cancer worldwide … Application of existing public-health methods for infection prevention, such as vaccination, safer injection practice, or antimicrobial treatments, could have a substantial effect on future burden of cancer worldwide." 
  
 The researchers used information from a number of sources, including a cancer-incidence database covering 27 cancers from 184 countries. 
  
 Commenting on the findings, Dr Goodarz Danaei from the Harvard School of Public Medicine in Boston, wrote: "Their estimates show the potential for preventive and therapeutic programmes in less developed countries to significantly reduce the global burden of cancer and the vast disparities across regions and countries. 
  
 "Since effective and relatively low-cost vaccines for HPV and HBV are available, increasing coverage should be a priority for health systems in high-burden countries." ||||| Roughly one in six cancers is caused by an infection, according to a global study highlighting the power of vaccines in cancer prevention. 
  
 French researchers pooled data on 27 cancers from 184 countries to calculate the fraction of cases attributable to viral, bacterial and parasitic infections. 
  
 "Around 2 million cancer cases each year are caused by infectious agents," the researchers wrote in their report, published today in The Lancet Oncology. "Application of existing public health methods for infection prevention, such as vaccination, safer injection practice, or antimicrobial treatments, could have a substantial effect on the future burden of cancer worldwide." 
  
 Human papillomavirus (HPV), hepatitis B and C, and the ulcer inducing Helicobacter pylori caused 1.9 million cancers worldwide in 2008, according to the study. HPV and hepatitis B infections are largely preventable through vaccination, and H. pylori can be treated with antibiotics. 
  
 "Most of the infection-attributable cases occurred in less developed countries and were due to preventable or treatable infections," Goodarz Danaei, assistant professor of global health at the Harvard School of Public Health in Boston, wrote in an editorial accompanying the study. "Since effective and relatively low-cost vaccines for HPV and [hepatitis B] are available, increasing vaccine coverage should be a priority for health systems in high-burden countries." 
  
 HPV is a sexually transmitted infection that causes cervical cancer as well as cancers of the throat, vagina, vulva, anus and penis, according to the U.S. Centers for Disease Control and Prevention. The CDC recommends the HPV vaccine for teenage girls and boys as well as some men and women up to age 26, but few end up getting all the necessary doses. 
  
 "Our vaccination program is gaining momentum but very slowly, and one reason is it's hard to get teenagers in for all three doses," said Dr. William Schaffner, chair of preventive medicine at Vanderbilt University Medical Center in Nashville, Tenn. "The other reason is that because HPV is sexually transmitted, it's evoked a whole bunch of hullaballoo over whether the vaccine promotes promiscuity. Of course, there's no evidence to support that at all." 
  
 The hepatitis B vaccine is also given in three doses, but in the first 18 months of life. 
  
 "We vaccinate all children against hepatitis B, so their risk of liver cancer down the road will be very much reduced," said Schaffner. "If we look back 20 years from now, we will see the occurrence of liver cancer dropping precipitously." 
  
 The realization that infections like HPV can trigger cancer is relatively new, earning virologists Harald zur Hausen, Françoise Barré-Sinoussi and Luc Montagnier the Nobel Prize in 2008. 
  
 "Every time we make and advance like that, the opportunity exists to make a vaccine that could prevent those kinds of infections and thus prevent another proportion of cancers that occur in our population," said Schaffner. 
  
 But, he added, choosing not to smoke, eating a healthy diet and keeping physically active also reduce the risk of cancer. 
  
 "We have to remember that in our country behavioral risk factors still loom large," he said. "There are a number of strategies we can all employ to reduce our risk of cancer even more." |||||
Skriv en artikel baserad på denna sammanfattning: – En sjättedel av alla cancerformer världen över är resultatet av potentiellt behandlingsbara eller förebyggande infektioner orsakade av bakterier, virus och parasiter, enligt en ny studie. Forskare fann att nästan 2 miljoner nya cancerfall 2008 orsakades av humant papillomvirus, hepatit B, hepatit C, och magbakterien Helicobacter pylori, och att andelen cancer orsakad av infektion var tre gånger högre i utvecklingsländer, uppger Guardian. En femtedel av de 7,5 miljoner cancerdödsfallen i världen 2008 orsakades av infektionsrelaterad cancer, fann studien. Forskningen visar att vacciner mot HPV och hepatit B bör prioriteras i hälso- och sjukvårdssystemen, konstaterar en ledarartikel som åtföljer Lancetstudien. HPV vaccinationsprogrammet ökar i fart, men bara mycket långsamt, eftersom "det är svårt att få in tonåringar för alla tre doser," och "eftersom HPV är sexuellt överförbara, det framkallas en hel bunt av hullaballoo om vaccinet främjar promiskuitet," stolen för förebyggande medicin vid Vanderbilt University Medical Center berättar ABC. Det har gjorts större framsteg med hepatit B-vaccinationsprogrammet, säger han, så förekomsten av levercancer bör "släppas snabbt" under de kommande 20 åren.
Write an article based on this summary: – A sixth of all cancers worldwide is the result of potentially treatable or preventive infections caused by bacteria, viruses and parasites, according to a new study. Researchers found that nearly 2 million new cancer cases in 2008 were caused by human papillomavirus, hepatitis B, hepatitis C, and stomach bacteria Helicobacter pylori, and that the proportion of cancer caused by infection was three times higher in developing countries, reports the Guardian. One fifth of the 7.5 million cancer deaths worldwide in 2008 were caused by infection-related cancer, the study found. The research shows that vaccines against HPV and hepatitis B should be prioritised in healthcare systems, notes an editorial accompanying the Lancet study. The HPV vaccination program is on the increase, but only very slowly, because "it's hard to get teenagers in for all three doses," and "because HPV is sexually transferable, there is a whole bundle of hullaballoo produced if the vaccine promotes promiscuity," the chair for preventive medicine at Vanderbilt University Medical Center tells ABC. There has been greater progress with the hepatitis B vaccination program, he says, so the incidence of liver cancer should be "released quickly" over the next 20 years.
Bakterier, virus och parasiter orsakar cirka 2m cancerfall i världen varje år, tror experter. Av de 7,5 miljoner som dog av cancer 2008 kan uppskattningsvis 1,5 miljoner ha berott på potentiellt förebyggande eller behandlingsbara infektioner. Forskare gjorde en statistisk analys av cancerförekomsten för att beräkna att cirka 16 % av alla cancerfall som diagnostiserades 2008 var infektionsrelaterade. Andelen cancer i samband med infektion var tre gånger högre i utvecklingsländerna än i utvecklade länder. Viktiga cancerframkallande smittämnen är humant papillomvirus (HPV), magsäcksbuggen Helicobacter pylori och hepatit B (HBV) och C-virus. Dessa fyra ansågs tillsammans ligga bakom 1,9 miljoner fall av cancer, främst mag-, lever- och livmoderhalscancer. Cervikal cancer stod för ungefär hälften av infektionsrelaterad kvinnocancer. Hos män påverkades lever, mage och tjocktarm av mer än 80 % av infektionsrelaterad cancer. Dr Catherine de Martel och dr Martyn Plummer, från International Agency for Research on Cancer in Lyon, skrev i Lancet Oncologys tidskrift: "Infektioner med vissa virus, bakterier och parasiter är en av de största och förebyggande orsakerna till cancer världen över ... Tillämpning av befintliga folkhälsometoder för att förebygga infektioner, såsom vaccination, säkrare injektionspraktik, eller antimikrobiella behandlingar, skulle kunna ha en betydande effekt på framtida cancerbörda världen över." Forskarna använde information från ett antal källor, bland annat en databas över cancerincidenser som omfattade 27 cancerfall från 184 länder. Dr Goodarz Danaei från Harvard School of Public Medicine i Boston kommenterade resultaten och skrev: "Deras uppskattningar visar på potentialen för förebyggande och terapeutiska program i mindre utvecklade länder för att avsevärt minska den globala bördan av cancer och de stora skillnaderna mellan regioner och länder. "Eftersom effektiva och relativt billiga vacciner mot HPV och HBV finns tillgängliga, bör ökad täckning vara en prioritering för hälso- och sjukvårdssystemen i länder med hög belastning." •• Ungefär en av sex cancerformer orsakas av en infektion, enligt en global studie som belyser vaccinens förmåga att förebygga cancer. Franska forskare samlade data om 27 cancerfall från 184 länder för att beräkna andelen fall som kan hänföras till virus-, bakterie- och parasitinfektioner. "Runt 2 miljoner cancerfall varje år orsakas av smittämnen", skrev forskarna i sin rapport, publicerad idag i The Lancet Oncology. "Användning av befintliga folkhälsometoder för att förebygga infektioner, såsom vaccination, säkrare injektionsmetoder eller antimikrobiella behandlingar, skulle kunna ha en betydande effekt på den framtida bördan av cancer i hela världen." Humant papillomvirus (HPV), hepatit B och C, och det sår som inducerade Helicobacter pylori orsakade 1,9 miljoner cancerfall över hela världen 2008, enligt studien. HPV- och hepatit B-infektioner kan till stor del förebyggas genom vaccination, och H. pylori kan behandlas med antibiotika. "De flesta av de infektionsutlösbara fallen inträffade i mindre utvecklade länder och berodde på att infektioner kunde förebyggas eller behandlas", skrev Goodarz Danaei, biträdande professor i global hälsa vid Harvard School of Public Health i Boston, i en ledarartikel som åtföljde studien. "Eftersom effektiva och relativt billiga vacciner mot HPV och [hepatit B] finns tillgängliga, bör ökad vaccintäckning vara en prioritering för hälso- och sjukvårdssystemen i länder med hög belastning." HPV är en sexuellt överförbar infektion som orsakar livmoderhalscancer samt cancer i hals, vagina, vulva, anus och penis, enligt USA:s centrum för sjukdomskontroll och förebyggande. CDC rekommenderar HPV-vaccinet för tonårsflickor och pojkar samt vissa män och kvinnor upp till 26 års ålder, men få får i slutändan alla nödvändiga doser. "Vår vaccinationsprogram ökar i fart men mycket långsamt, och en anledning är att det är svårt att få in tonåringar för alla tre doserna", säger dr William Schaffner, ordförande i förebyggande medicin vid Vanderbilt University Medical Center i Nashville, Tenn. "Den andra anledningen är att eftersom HPV är sexuellt överfört, har det framkallat en hel massa hullaballoo om vaccinet främjar promiskuitet. Naturligtvis finns det inga bevis för det alls." Hepatit B-vaccinet ges också i tre doser, men under de första 18 månaderna av livet. "Vi vaccinerar alla barn mot hepatit B, så deras risk för levercancer på vägen kommer att minska mycket", säger Schaffner. "Om vi ser tillbaka om 20 år, kommer vi att se förekomsten av levercancer sjunka snabbt." Insikten om att infektioner som HPV kan utlösa cancer är relativt ny, tjänar virologerna Harald zur Hausen, Françoise Barré-Sinoussi och Luc Montagnier Nobelpriset 2008. "Varje gång vi gör och avancerar på det sättet, finns möjligheten att göra ett vaccin som kan förhindra den typen av infektioner och på så sätt förhindra en annan andel cancer som förekommer i vår befolkning", säger Schaffner. Men, tillade han, att välja att inte röka, äta en hälsosam kost och hålla sig fysiskt aktiv minskar också risken för cancer. "Vi måste komma ihåg att i vårt land är beteendemässiga riskfaktorer fortfarande stora", sade han. "Det finns ett antal strategier som vi alla kan använda för att minska risken för cancer ännu mer." Â°°
Bacteria, viruses and parasites cause about 2m cancer cases in the world every year, experts believe. Of the 7.5 million who died of cancer in 2008, an estimated 1.5 million may have been due to potentially preventable or treatable infections. Researchers conducted a statistical analysis of the incidence of cancer to calculate that about 16% of all cancer cases diagnosed in 2008 were infection-related. The proportion of cancer associated with infection was three times higher in developing countries than in developed countries. Important carcinogens are human papilloma virus (HPV), the stomach bug Helicobacter pylori and hepatitis B (HBV) and C virus. These four were considered jointly to be responsible for 1.9 million cases of cancer, mainly gastrointestinal, hepatic and cervical cancer. Cervical cancer accounted for about half of infection-related female cancer. In men, more than 80% of infection-related cancer affected the liver, stomach and colon. Dr. Catherine de Martel and Dr. Martyn Plummer, of the International Agency for Research on Cancer in Lyon, wrote in Lancet Oncology's journal: "Infections with certain viruses, bacteria, and parasites are one of the largest and preventive causes of cancer worldwide...Applying existing public health methods to prevent infections, such as vaccination, safer injection practice, or antimicrobial treatments, could have a significant effect on future cancer burden worldwide." The researchers used information from a number of sources, including a cancer incidence database covering 27 cancer cases from 184 countries. Commenting on the results, Dr. Goodarz Danaei of the Harvard School of Public Medicine in Boston wrote: "Their estimates show the potential for prevention and therapeutic programs in less developed countries to significantly reduce the global burden of cancer and the wide differences between regions and countries. "Since effective and relatively cheap vaccines against HPV and HBV are available, increased coverage should be a priority for healthcare systems in countries with high loads." • Approximately one in six cancers is caused by an infection, according to a global study highlighting the ability of vaccines to prevent cancer. French researchers collected data on 27 cancer cases from 184 countries to calculate the proportion of cases attributable to viral, bacterial and parasitic infections. "Around 2 million cancer cases every year are caused by infectious agents," the researchers wrote in their report, published today in The Lancet Oncology. "The use of existing public health methods to prevent infections, such as vaccination, safer injection methods or antimicrobial treatments, could have a significant effect on the future burden of cancer worldwide." Human papillomavirus (HPV), hepatitis B and C, and the wound that induced Helicobacter pylori caused 1.9 million cancer cases worldwide in 2008, according to the study. HPV and hepatitis B infections can be largely prevented by vaccination, and H. pylori can be treated with antibiotics. "Most of the infectious trigger cases occurred in less developed countries and were due to infections being prevented or treated," wrote Goodarz Danaei, assistant professor of global health at the Harvard School of Public Health in Boston, in an editorial accompanying the study. "Since effective and relatively cheap vaccines against HPV and [hepatitis B] are available, increased vaccine coverage should be a priority for healthcare systems in countries with high loads." HPV is a sexually transmitted infection that causes cervical cancer as well as cancer of the neck, vagina, vulva, anus and penis, according to the United States Center for Disease Control and Prevention. The CDC recommends the HPV vaccine for teenage girls and boys as well as some men and women up to 26 years of age, but few ultimately receive all necessary doses. "Our vaccination program is increasing at speed but very slowly, and one reason is that it is difficult to get teenagers in for all three doses," said Dr. William Schaffner, president of preventive medicine at Vanderbilt University Medical Center in Nashville, Tenn. "The second reason is that because HPV is sexually transmitted, it has provoked a whole lot of hullaballoo if the vaccine promotes promiscuity. Of course there is no evidence of that at all." The hepatitis B vaccine is also given in three doses, but for the first 18 months of life. "We're immunizing all children against hepatitis B, so their risk of liver cancer along the way will decrease a lot," Schaffner says. "If we look back in 20 years, we will see the incidence of liver cancer drop rapidly." Realising that infections like HPV can trigger cancer are relatively new, virologists Harald zur Hausen, Françoise Barré-Sinoussi and Luc Montagnier serve the Nobel Prize in 2008. "Every time we do and advance that way, there is the possibility of making a vaccine that can prevent that kind of infection and thus prevent another proportion of cancer that occurs in our population," Schaffner says. But, he added, choosing not to smoke, to eat a healthy diet and to keep physically active also reduces the risk of cancer. "We have to remember that in our country, behavioural risk factors are still large," he said. "There are a number of strategies that we can all use to reduce the risk of cancer even more." <unk>