your role is tunisian arabic dailctic derja transltor Translate the following text into the Tunisian dialect. Ensure the output is structured as 'Question: ... Answer: ...'. Please capture the nuances of the Tunisian dialectic Arabic. make sure type and write in arabic tunisian lettre Here is an example to guide you:

Question: شنو اسمك؟
Answer: اسمي جون.

Now, translate the following:

Question: Write a summary based on this article:

Parasitic worms infect 2 billion people globally. Mostly, such infections are symptomless and individual worm burdens are low. Blackwell et al. monitored the fecundity of Tsimane women in Bolivia. These women have on average of 10 children in their lifetimes. However, if they had successive hookworm infections, lifetime births dropped to 7. Surprisingly, if the women were chronically infested with roundworm, they had as many as 12 children. These effects may relate to the balance of immune responses that the different worms induce, rather than to the physiological costs of parasitism. 
  
 Abstract 
  
 Infection with intestinal helminths results in immunological changes that influence co-infections, and might influence fecundity by inducing immunological states affecting conception and pregnancy. We investigated associations between intestinal helminths and fertility in women, using 9 years of longitudinal data from 986 Bolivian forager-horticulturalists, experiencing natural fertility and 70% helminth prevalence. We found that different species of helminth are associated with contrasting effects on fecundity. Infection with roundworm (Ascaris lumbricoides) is associated with earlier first births and shortened interbirth intervals, whereas infection with hookworm is associated with delayed first pregnancy and extended interbirth intervals. Thus, helminths may have important effects on human fertility that reflect physiological and immunological consequences of infection. ||||| Infection with one of the most common parasitic worms can increase a woman's fertility , according to a new study. 
  
 Scientists discovered that indigenous women living in the Amazon rainforest infested with the giant roundworm had, on average, two extra children. 
  
 The nine-year study was branded "intriguing" and one that would spark much more investigation. 
  
 Researchers writing in the journal Science suggest that the intestinal worm, Ascaris lumbricoides, may alter the immune system, making it easier for women to fall pregnant. 
  
 The scientists, from the University of California, Santa Barbara, said parasites can trigger some of the same changes to the immune system that occur during pregnany. 
  
 "It is very surprising and intriguing to find that infection with this particular species of roundworm actually enhances fertility." Prof Allan Pacey, fertility specialist 
  
 As such, they studied 986 indigenous women in Bolivia, where about 70 per cent of the Tsimane population has a parasitic worm infection. 
  
 They said that the average Tsimane woman had nine children but that those infected with the Ascaris would tend to bear two more than those not infected. 
  
 Ascaris, which can grow to 36 centimeters, was found to shorten the time between pregnancies and reduced the age at which women first give birth. 
  
 The scientists speculated that the worms might aid conception and implantation of the embryo in the womb by reducing inflammation. 
  
 • My fertility is none of your business 
  
 Prof Aaron Blackwell, one of the researchers, told BBC News: "The effects are unexpectedly large. 
  
 "We think the effects we see are probably due to these infections altering women's immune systems, such that they become more or less friendly towards a pregnancy." 
  
 He said using worms as a fertility treatment was an "intriguing possibility" but warned there was far more work to be done "before we would recommend anyone try this". 
  
 Rick Maizels, a parasite immunologist from the University of Edinburgh, said: "This is a very original study. 
  
 “I think it’s going to spark a lot of other investigations." 
  
 Prof Allan Pacey, a fertility scientist at the University of Sheffield, said: "It is very surprising and intriguing to find that infection with this particular species of roundworm actually enhances fertility." 
  
 The study also found that hookworms had the opposite effect on fertility, leading to three fewer children across a lifetime. ||||| Image copyright SPL 
  
 Infection with a species of parasitic worm increases the fertility of women, say scientists. 
  
 A study of 986 indigenous women in Bolivia indicated a lifetime of Ascaris lumbricoides, a type of roundworm, infection led to an extra two children. 
  
 Researchers, writing in the journal Science, suggest the worm is altering the immune system to make it easier to become pregnant. 
  
 Experts said the findings could lead to "novel fertility enhancing drugs". 
  
 Nine children is the average family size for Tsimane women in Bolivia. And about 70% of the population has a parasitic worm infection. 
  
 Image copyright Michael Gurven Image caption Tsimane people live a "forager-farming" existence 
  
 Up to a third of the world's population also lives with such infections. 
  
 But while Ascaris lumbricoides increased fertility in the nine-year study, hookworms had the opposite effect, leading to three fewer children across a lifetime. 
  
 Prof Aaron Blackwell, one of the researchers , from the University of California Santa Barara, told the BBC News website: "The effects are unexpectedly large." 
  
 He said women's immune systems naturally changed during pregnancy so they did not reject the foetus. 
  
 Prof Blackwell said: "We think the effects we see are probably due to these infections altering women's immune systems, such that they become more or less friendly towards a pregnancy." 
  
 He said using worms as a fertility treatment was an "intriguing possibility" but warned there was far more work to be done "before we would recommend anyone try this". 
  
 Image copyright SPL Image caption The hookworm lowered fertility 
  
 Prof Rick Maizels, a specialist in parasitic worms and the immune system, told the BBC News website: "It's horrifying that the hookworm effects are so profound, half of women by 26 or 28 have yet to fall pregnant and that's a huge effect on life." 
  
 Bacterial and viral infections try to outpace the immune system by having explosive population growth. 
  
 But Prof Maizels said parasites did the opposite, "growing slowly and trying to suppress the immune system", which is why they make vaccines less effective and lower levels of allergies. 
  
 He suggested hookworm may also be causing anaemia and leading to infertility that way. 
  
 'Very surprising' 
  
 Prof Allan Pacey, a fertility scientist at the University of Sheffield, told the BBC: "It is very surprising and intriguing to find that infection with this particular species of roundworm actually enhances fertility." 
  
 He said drugs had been tried to alter a woman's immune system to boost IVF, but without success. 
  
 He added: "Whilst I wouldn't want to suggest that women try and become infected with roundworms as a way of increasing their fertility, further studies of the immunology of women who do have the parasite could ultimately lead to new and novel fertility enhancing drugs." 
  
 Follow James on Twitter. ||||| Women with a certain kind of parasitic worm are more likely to fall pregnant and have more children, scientists have found. 
  
 A roundworm living inside women in Bolivia is now believed to cause them to mother two more children than average, the study in journal Science showed. 
  
 The study of 986 indigenous women suggested a lifetime carrying the worm, called Ascaris lumbricoides, changes the immune system to make women more fertile. 
  
 Professor Aaron Blackwell, one of the authors of the study and a researcher at the University of California Santa Barbara, told BBC News website the worm's effects were unexpectedly significant. 
  
 "We think the effects we see are probably due to these infections altering women's immune systems, such that they become more or less friendly towards a pregnancy," he said. 
  
 He added that more research would have to be carried out before considering the "intriguing possibility" that the worm could be used to increase fertility. 
  
 Another fertility scientist, Professor Allan Pacey at the University of Sheffield, said the results could lead to new drugs for women wanting to become pregnant. 
  
 "Whilst I wouldn't want to suggest that women try and become infected with roundworms as a way of increasing their fertility, further studies of the immunology of women who do have the parasite could ultimately lead to new and novel fertility enhancing drugs," he told the BBC. 
  
 Another worm, the hookworm, was found in the study to lead to fewer children across a woman's lifetime - probably because this particular parasite suppresses the immune system, rather than enhances it. 
  
 Professor Rick Maizels, a specialist in parasitic worms, told the BBC the effects of the hookworm on women's fertility were shocking. 
  
 "It's horrifying that the hookworm effects are so profound, half of women by 26 or 28 have yet to fall pregnant and that's a huge effect on life," he said. 
  
 Women's immune systems naturally change during pregnancy, scientists have previously reported. |||||

Summary:
Answer: A new study has found that parasitic worms can have contrasting effects on women's fertility. Researchers from the University of California, Santa Barbara, discovered that indigenous women in the Amazon rainforest who were infested with the giant roundworm had, on average, two extra children. In contrast, women with hookworm infections saw a reduction in lifetime birth rates. In total, parasitic worms infect around 2 billion people globally. The scientists believe that the varying effects are due to the balance of immune responses that the different worms induce, rather than the physiological costs of parasitism. The discovery could lead to the development of novel fertility-enhancing treatments.