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BEIJING, Sept. 14 (Xinhuanet) -- The U.S. Food and Drug Administration (FDA) on Monday announced a recall on a drug infusion pump of Medtronic, the Associated Press reported.The recalled drug pump was called "SynchroMed II", including models of 8637-20 and 8637-40, distributed between 2004 and July 2011.Drug infusion pump was used to deliver the drugs for patients to treat chronic pain, spasms as well as other conditions.The pumps' malfunction could put patients in the risk of either recurrent or withdrawal symptoms, which could be life-threatening, FDA warned.There were 55 reported cases and one death related to the drug withdrawal, among a total 139,653 SynchroMed II pump implants worldwide, FDA notified.The problem was due to a film within the pump's battery that could stop the therapy, FDA said.Medtronic, the U.S. medical technology company based in Minneapolis, is not recommending patients to remove the pumps, but instead, encourage patients to contact their doctor if they hear the device alarm.

LOS ANGELES, June 9 (Xinhua) -- The edge of our solar system may not be smooth, but filled with a turbulent sea of magnetic bubbles approximately 100 million miles (160 million kilometers) wide, NASA's Jet Propulsion Laboratory (JPL) said on Thursday.The finding was based on observations from NASA's Voyager spacecraft, humanity's farthest deep space sentinels, said JPL in Pasadena, Los Angeles.While using a new computer model to analyze Voyager data, scientists found the sun's distant magnetic field is made up of bubbles which are created when magnetic field lines reorganize, said JPL.The new model suggests the field lines are broken up into self- contained structures disconnected from the solar magnetic field, according to JPL."The sun's magnetic field extends all the way to the edge of the solar system," said astronomer Merav Opher of Boston University. "Because the sun spins, its magnetic field becomes twisted and wrinkled, a bit like a ballerina's skirt. Far, far away from the sun, where the Voyagers are, the folds of the skirt bunch up."Like Earth, our sun has a magnetic field with a north pole and a south pole. The field lines are stretched outward by the solar wind, a stream of charged particles emanating from the star that interacts with material expelled from others in our corner of the Milky Way galaxy.Understanding the structure of the sun's magnetic field will allow scientists to explain how galactic cosmic rays enter our solar system and help define how the star interacts with the rest of the galaxy.The Voyager spacecraft, more than nine billion miles (14 billion kilometers) away from Earth, are traveling in a boundary region. In that area, the solar wind and magnetic field are affected by material expelled from other stars in our corner of the Milky Way galaxy.Launched in 1977, the Voyager twin spacecraft have been on a 33- year journey. They are en route to reach the edge of interstellar space. JPL built the spacecraft and continues to operate them.

GENEVA, Aug. 12 (Xinhua) -- 18 people seeking treatment at hospitals in Somalia had been confirmed cholera positive through laboratory tests, the Geneva based World Health Organization (WHO) said on Friday.The 18 positive cases were detected out of 30 stool samples collected from patients seeking treatment at hospitals for acute watery diarrhea, a symptom that could result from cholera, WHO spokesperson Tarek Jasarevic told reporters.All confirmed cases, including residents of Mogadishu district and those among internally displaced persons (IDPs), were said to be tested positive for the Vibrio cholera serotype "inaba", which had been the predominant serotype in Somalia for the past three years."These results are an alarming reminder of the critical situation in Mogadishu and other parts of Southern, Central Somalia, (which are) still experiencing drought, population displacement and conflict," Jasarevic said.WHO has reported a dramatic increase of acute watery diarrhea cases in Somalia.In June and July alone, 1,633 acute watery diarrhea cases had been registered in Banadir Hospital, Mogadishu, representing 38 percent of all reported cases in 2011, and a sharp rise comparing with the same period last year.The United Nations public health arm said the situation was related to poor sanitation and limited access to safe water in numerous informal IDP settlements and a limited capacity of existing health partners to access those settlements and provide essential health services.In addition, the high number of malnourished children due to the ongoing famine increased the susceptibility to waterborne diseases.

SAN FRANCISCO, July 14 (Xinhua) -- Microsoft on Thursday introduces a hacking alert system to its Windows Live Hotmail email service alongside banning common passwords."When someone's account gets hijacked, their friends often find out before they do, because the hijacker uses their account to send spam or phishing email to all their contacts," said Microsoft in a blog post.The new security feature adds a "My friend's been hacked!" option in the "mark as" menu in Hotmail and also enables users to report hacked accounts via the junk mail filing screen.Then an alert will be sent to Microsoft, which will "make sure the account can no longer be used by spammers and activates an account recovery process to allow the owner to take back control the accounts."Users can report any email account as compromised and Hotmail will provide the information to other email providers like Yahoo! and Gmail, said the blog.Meanwhile, Microsoft said Hotmail will roll out a feature to prevent users from choosing commonly used and weak passwords, such as "123456," "ilovecats" and "gogiants." Users who currently use a weak password will be asked to change to a stronger one in the future.Hotmail, first launched in July 1996, is one of the first free email providers, and was acquired by Microsoft in 1997 for an estimated 400 million U.S. dollars.According to statistics released by comScore last August, Hotmail was then the world's largest web-based email service with around 364 million users, followed by Yahoo! Mail (280 million) and Gmail (191 million).