Q: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Story highlights New WHO guidelines double the safe sex timeline 
  
 Practice safe sex for eight weeks after travel to Zika-infected countries 
  
 Men with Zika-like symptoms should wait six months 
  
 (CNN) If you've traveled to any country with a current outbreak of Zika, you should wait a full eight weeks to have unprotected sex or attempt to conceive a baby, even if you have no symptoms of the disease, the World Health Organization said today. Previous guidance suggested taking precautions or abstaining for only four weeks. 
  
 Men who have had any Zika-like symptoms such as rash, fever, red eyes and painful joints or muscles should practice safe sex or consider abstaining for at least six months, the organization says. 
  
 The new guidance from the WHO is now in line with the U.S. Centers for Disease Control and Prevention's safe-sex recommendations for Zika. 
  
 The WHO also recommends that couples living in countries with active infections "be correctly informed and oriented to consider delaying pregnancy" and that any woman who has had unprotected sex and does not wish to become pregnant "have ready access to emergency contraceptive services and counseling." 
  
 Both the WHO and the CDC have said that Zika is definitively linked to the alarming rise in birth defects and may be associated with an increase in Guillain-Barré Syndrome, a disorder in which the body's own immune cells attack the nervous system. 
  
 Read More ||||| Scientists raised the possibility that the Zika virus can be transmitted by oral sex — perhaps even by kissing — on Friday in a letter to The New England Journal of Medicine describing one such case in France. 
  
 A single incident may seem trivial. But until early this year, there was only one known instance of sexual transmission of the Zika virus — a 2008 case in which a mosquito researcher just back from Africa infected his wife in Colorado. 
  
 Now scientists believe that sexual transmission is an important driver of the Zika epidemic in the Americas. Cases have been reported in 10 countries where no mosquitoes carry the virus, including France, Germany, Italy, Portugal and New Zealand. 
  
 In the French case, a 46-year-old man returned to Paris from Rio de Janeiro on Feb. 10, shortly after experiencing Zika symptoms in Brazil — fever, headache and a rash — that had just ended when he reached France. 
  
 He and a 24-year-old partner had sex seven times between Feb. 11 and Feb. 20, each involving vaginal sex without ejaculation and oral sex with ejaculation. 
  
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 The woman fell ill on Feb. 20. Both were tested for Zika infection on Feb. 23. The man had high levels of the virus in his semen and urine, but none in his blood or saliva. The woman had the virus in her urine and saliva, and antibodies to the virus in her blood. But a vaginal swab was negative for the infection. 
  
 The two were using oral sex as a form of birth control, said Dr. Yazdan Yazdanpanah, an infectious disease specialist at the National Institute of Health and Medical Research in Paris and one of the report’s authors. 
  
 “I don’t think this changes anything, but it shows you how elaborate the number of avenues of possible transmission can be,” said Dr. William Schaffner, head of preventive medicine at Vanderbilt University Medical School. 
  
 He agreed that the most likely transmission route was oral sex, although he said it was possible that the woman was infected by pre-ejaculate during vaginal sex, or that the couple’s recollections of each sex act were imperfect. 
  
 “It could be that it’s a moment of passion, it’s late at night and everyone’s had a few liqueurs,” he said. 
  
 Dr. Yazdanpanah said the two were interviewed separately and their descriptions matched. 
  
 Dr. John T. Brooks, an epidemiologist at the Centers for Disease Control and Prevention studying sexual transmission of the Zika virus, said he was “not particularly surprised” to see transmission that was probably by oral sex. 
  
 Transmission through kissing is unlikely, Dr. Brooks said. 
  
 “Casual kissing has got to be safe because, if it weren’t, don’t you think we’d see a lot more Zika? Every mom who kissed her baby would pass it on,” he said. “To be sure, we’d have to look for deep kissing in the absence of sexual contact, and that’s hard to find.” |||||
A:
The Zika virus can be passed through vaginal sex, anal sex—and possibly oral sex, scientists now say based on a single case in France. A 46-year-old man who developed Zika symptoms during a two-month stay in Brazil returned home to Paris in February, then had unprotected vaginal sex without ejaculation and oral sex with ejaculation with a 24-year-old partner on seven occasions between Feb. 11 and Feb. 20, the New York Times reports via a letter to the New England Journal of Medicine. Three days later, both tested positive for Zika. High levels of the virus were found in the man's semen and urine, but not in his blood or saliva, while the virus was detected in the woman's urine and saliva, and antibodies to Zika were found in her blood. A vaginal swab found no signs of the virus. "We cannot rule out the possibility that transmission occurred not through semen but through other biologic fluids, such as pre-ejaculate secretions or saliva exchanged through deep kissing," the scientists acknowledged in their letter. A CDC epidemiologist says he's "not particularly surprised" by the case. "I don't think this changes anything, but it shows you how elaborate the number of avenues of possible transmission can be," the head of preventive medicine at Vanderbilt University Medical School tells the Times. The WHO recently revised its guidelines, noting those who visit a Zika-infected country should refrain from unprotected sex for eight weeks, rather than four, per CNN.