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JOHANNESBURG, June 1 (Xinhua) -- An estimated 2 million adolescents ages 10 to 19 are living with HIV, with 86 percent of them from sub-Saharan Africa, according to a global report on HIV prevention launched in Johannesburg on Wednesday.For the first time, the world gets to see the number of adolescents between the ages of 10 to 19 living with HIV in the report named Opportunity in Crisis: Preventing HIV from early adolescence to young adulthood.The report is a jointly publication by the United Nations Children's Fund (UNICEF), UNAIDS, the United Nations Educational, Scientific and Cultural Organization (UNESCO), the United Nations Population Fund (UNFPA), the International Labor Organization (ILO) , the World Health Organization (WHO) and World Bank.According to the report, people aged 15-24 accounted for 41 percent of new infections over the age of 15 in 2009. Worldwide, an estimated 5 million young people in that age group were living with HIV in 2009. Most of them live in sub-Saharan Africa. Globally, young women make up more than 60 percent of all young people living with HIV. In sub-Saharan Africa that rate jumped to 72 percent.Despite these challenges, the report acknowledges that some progress has been made in preventing new infections among young people."In many high-burden countries, HIV prevalence and incidence have declined among young people. While in 2001 there were 5.7 million young people living with HIV, the figure stands at 5 million (in 2009)," said the UNICEF eastern and southern Africa regional director, Elhadj As Sy, at the media briefing.He pointed that sexual transmission and injection drug use remain the major modes of transmission of HIV among young people. Early sexual debut, early pregnancy and early experiences with drug use all raise risks for HIV infection.The report reveals that unemployment and poverty are reported as the main reasons young people enter the sex trade. Worldwide, many young people driven by economic pressure, exploitation, social exclusion and lack of family support turn to commercial sex and injecting drug use.In 2001, the world made a commitment to reduce the prevalence of HIV among young people by 25 percent by 2010. The actual reduction achieved (from 5.7 million to 5 million) is 12 percent, and it represents less than half the target percentage."To avoid the current programming failures, we have to adopt a ' Continuum of Prevention Approach'." said Lina Mousa, deputy director of UNFPA Africa Regional Office."This continuum of prevention must be reflected in national HIV strategic plans, poverty reduction strategies and global fund proposals. This response must be developed with and for young people so that they own the response together with their communities," she added.To build this continuum of prevention for adolescents and young people, the reports outlined nine specific recommendations including providing young people with information and comprehensive sexuality education, strengthening child protection and social protection measures, engaging communities in shaping a positive social environment that promotes healthy behavior, establishing laws and policies that respect young people's rights.

BEIJING, Aug. 16 (Xinhuanet) -- It is widely accepted that obesity leads to an increased risk of health complications, but new studies quoted by media Tuesday challenge the conventional notion.“Our studies challenge the idea that all obese individuals need to lose weight,” said Dr. Jennifer Kuk, assistant professor in York University’s School of Kinesiology & Health Science in Toronto.  One of the studies used data from the Aerobics Center Longitudinal Study consisting of 29,533 individuals and assessed their mortality in 16 years.It found no difference in death risks between normal-weight individuals and obese ones. "Since the obese people did not have greater risk of dying than normal weight individuals, they don’t need to lose weight," said Dr. Kuk.But the finding did not give obese individuals a “free license” to gain weight, Dr. Kuk added. Maintaining weight, eating right and exercising may be better than trying to lose weight in the long run, said Dr. Kuk.

SAN FRANCISCO, Aug. 23 (Xinhua) -- The amount of malware targeted at devices based on Google's Android platform surged 76 percent in the second quarter over the previous three months in 2011, making it the most attacked mobile operating system, computer security firm McAfee said on Tuesday.A new McAfee study found that in the second quarter, Android- based malware surpassed Nokia's Symbian as the most popular target for mobile malware developers.While Symbian and Java ME, a platform designed for mobile devices and other embedded systems, remain the most targeted to date, the rapid rise in Android malware indicates that the platform could become an increasing target for cyber criminals McAfee said.Models pose with the new Samsung Galaxy S Android smartphone during its launch ceremony at the headquarters of Samsung Electronics in Seoul in this June 8, 2010 file photograph.It warned that the attacks on Android platform could affect everything from calendar apps, to text messages, and even a fake Angry Birds updates.According to the study, malware on mobile platforms is increasing steadily, often mimicking the same code as personal computer-based threats, as vast amount of personal and business data are now found on user's smartphones and other mobile devices."This year we've seen record-breaking numbers of malware, especially on mobile devices, where the uptick is in direct correlation to popularity," Vincent Weafer, senior vice president of McAfee Labs, said in a statement."Overall attacks are becoming more stealth and more sophisticated, suggesting that we could see attacks that remain unnoticed for longer periods of time," he noted.

SAN FRANCISCO, June 14 (Xinhua) -- Apple updated its online store on Tuesday to begin offering unlocked models of iPhone 4 in the United States for the first time."The unlocked iPhone 4 requires an active micro-SIM card that you obtain from a supported GSM wireless carrier," said Apple in the product description. The iPhone requires a smaller version of the standard SIM (Subscriber Identity Module) card.Started at 649 U.S. dollars for the 16 GB version, the unlocked model is a GSM phone, which means, in the United States, the phone runs on networks of T-Mobile or AT&T, although it can only send data over T-Mobile's old EDGE network, not its 3G network and the faster HSPA+ network.Verizon and Sprint, the other two major U.S. wireless carriers, both use CDMA networks that do not use SIM cards.The iPhone 4 has been sold unlocked in other countries. For frequent international travelers, an unlocked iPhone means they just need to pop in a micro-SIM card for whichever country they are going, avoiding provider's high international fees.According to Apple, iPhone sales grew 113 percent year over year in the second quarter of its fiscal 2011, reaching a record high of 18.65 million units.

SAN FRANCISCO, Aug. 23 (Xinhua) -- The amount of malware targeted at devices based on Google's Android platform surged 76 percent in the second quarter over the previous three months in 2011, making it the most attacked mobile operating system, computer security firm McAfee said on Tuesday.A new McAfee study found that in the second quarter, Android- based malware surpassed Nokia's Symbian as the most popular target for mobile malware developers.While Symbian and Java ME, a platform designed for mobile devices and other embedded systems, remain the most targeted to date, the rapid rise in Android malware indicates that the platform could become an increasing target for cyber criminals McAfee said.Models pose with the new Samsung Galaxy S Android smartphone during its launch ceremony at the headquarters of Samsung Electronics in Seoul in this June 8, 2010 file photograph.It warned that the attacks on Android platform could affect everything from calendar apps, to text messages, and even a fake Angry Birds updates.According to the study, malware on mobile platforms is increasing steadily, often mimicking the same code as personal computer-based threats, as vast amount of personal and business data are now found on user's smartphones and other mobile devices."This year we've seen record-breaking numbers of malware, especially on mobile devices, where the uptick is in direct correlation to popularity," Vincent Weafer, senior vice president of McAfee Labs, said in a statement."Overall attacks are becoming more stealth and more sophisticated, suggesting that we could see attacks that remain unnoticed for longer periods of time," he noted.