Given a paragraph, generate a claim that is supported by the given paragraph. 1) The claim must contain information from within the paragraph. 2) A sentence within the paragraph can be used as a claim. 3) The claim should not have contradictions within the paragraph. 4) The claim should be at most one sentence long.

[Q]: "Liquid chocolate is prepared in the workshop of the ""Felicitas"" chocolate shop in Hornow, south of Berlin, December 2, 2009. REUTERS/Fabrizio Bensch The study, which combined the results of 42 smaller studies and was published in the American Journal of Clinical Nutrition, also found that participants had small improvements in blood vessel function and a dip in their insulin levels. A number of past studies have found that chocolate lovers seem to have lower rates of certain heart risks, such as high blood pressure. "My take-away message would be that if people like dark chocolate, then eating a little in place of other 'treat' foods is fine, and may be beneficial," said study leader Lee Hooper, at Norwich Medical School in the UK. "However, the evidence is not yet good enough to suggest that we should all be doing this." She cautioned that the studies involved were neither large enough nor long enough to show whether eating chocolate has any effect on a person's risk of having a heart attack or stroke. In contrast to past studies, which were largely observational and couldn't prove cause-and-effect that chocolate itself caused the changes the current study focused on clinical trials, where researchers assigned people to eat chocolate or not and then watched for changes in blood pressure, cholesterol and other heart risk factors. Hooper and her team pooled data from 42 small clinical trials involving about 1,300 people and found that chocolate eaters had a few points knocked off their blood pressure readings, along with lower insulin levels and other benefits. Though it's not clear why chocolate has this affect, it's believed to be due to compounds known as flavonoids, which are also present in foods such as nuts, soy, tea and wine. But researchers acknowledged shortcomings in their study, including differences in the people involved in the trials some healthy, some with chronic health problems and different ways of testing chocolate's effects. Some studies used cocoa drinks, some solid chocolate and some cocoa supplements. They also varied in how long people were "treated," though most trials lasted less than six weeks. The biggest question may be whether any benefits would be worth the downside of chocolate. Based on the studies they used, Hooper's team writes, it could take several hundred calories' worth of chocolate to see effects on insulin and blood vessel function and that could mean trouble for your waistline. "From a practical perspective it is premature to advise individuals to consume chocolate or cocoa to decrease their risk of cardiovascular disease," said Alice Lichtenstein, director of the cardiovascular nutrition lab at Tufts University in Boston, who was not part of the study. For now, she added, if you enjoy a little chocolate in your life, you can probably keep doing so. Just don't add it in the hopes of helping your heart."
[A]: Chocolate may be good for your heart: study.

[Q]: More than 132,000 cases of the virus have been reported in 123 countries since it emerged in December in the central Chinese city of Wuhan, WHO director-general Tedros Adhanom Ghebreyesus told a virtual news conference. "Europe has now become the epicenter of the pandemic with more reported cases and deaths than the rest of world combined apart from China," he said in Geneva. Tedros announced that the WHO was launching a coronavirus Solidarity Response Fund. This would to allow people and organizations to contribute to help fund masks, gloves, gowns and goggles for heath workers, as well as diagnostic kits and investment in research and development, including for vaccines. Facebook will match up to $10 million in donations, while Alphabet Inc's Google will donate $5 million, the WHO and UN Foundation later announced in a joint statement. Social distancing, where people avoid close proximity or touching, is a "tried and tested method" to slow the spread of a virus but "not a panacea" that will stop transmission, the WHO's top emergency expert Dr. Mike Ryan said. Each country must decide on its own measures to protect its population, he said, adding: "But we've also consistently said that blanket travel measures in their own right will do nothing to protect an individual state." Detection and isolation of infected people, as well as tracing their contacts and wider testing, must be part of a comprehensive strategy, Ryan said. "As part of an overall comprehensive strategy, there is a place - particularly inside national borders - for potentially restricting movement between zones, as we've seen in certain places," he said. "But there is rarely a justification for blanket bans, unless of course the context and the risk defines that." U.S. President Donald Trump has announced sweeping travel restrictions to prevent people from 26 European countries - except for Britain and Ireland - from traveling to the United States in a bid to limit the virus spread. A number of other countries in recent days have announced stepped up border checks, and canceled flights to other countries, in an effort to contain the spread. Trump on Friday declared a national emergency over the fast-spreading coronavirus, opening the door to providing what he said was about $50 billion in federal aid to fight the disease.
[A]: Europe is epicenter of coronavirus pandemic: WHO.

[Q]: Dengue infections appear to be dropping fast in communities in Indonesia, Vietnam, Brazil and Australia that are buzzing with the specially bred mosquitoes, an international research team reported Thursday. It's the first evidence from large-scale field trials that mosquitoes are less likely to spread dengue and similar viruses when they also carry a type of bacteria that's common in insects and harmless to people. Rather than using pesticides to wipe out bugs, "this is really about transforming the mosquito," said Cameron Simmons of the nonprofit World Mosquito Program that is conducting the research. The first hint of success came from Australia. Mosquitoes bred to carry Wolbachia bacteria were released in parts of North Queensland starting in 2011, and gradually spread through the local mosquito population. Dengue is transmitted when a mosquito bites someone who is infected, and then bites another person, but somehow Wolbachia blocks that and local transmission has nearly disappeared in those North Queensland communities, Simmons said in an interview. The real test would come in dengue-plagued areas in Asia and Latin America that regularly experience outbreaks where millions get the painful and sometimes deadly disease. Thursday, Simmons' team reported a 76% decline in dengue recorded by local authorities in an Indonesian community near the city of Yogyakarta since the 2016 release of Wolbachia-carrying mosquitoes. That's compared to dengue transmission in a nearby area where regular mosquitoes do the biting. Researchers found a similar drop in a community near the southern Vietnamese city of Nha Trang. And preliminary results suggest large declines in dengue and a related virus, chikungunya, in a few neighborhoods in Brazil near Rio de Janeiro. The studies are continuing in those countries and others. But the findings, presented at a meeting of the American Society for Tropical Medicine and Hygiene, suggest it's possible to turn at least some mosquitoes from a public health threat into nuisance biters. The work marks "exciting progress," said Michigan State University professor Zhiyong Xi, who wasn't involved with the project but has long studied how Wolbachia can turn mosquitoes against themselves. Reducing disease "is the ultimate success of our field," added University of Maryland biologist Brian Lovett, who also wasn't part of the project. More research is needed, specialists cautioned. These studies used local health groups' counts of dengue cases rather than blood tests, noted Penn State University professor Elizabeth McGraw. And while Wolbachia has persisted in North Queensland mosquitoes for eight years and counting, whether mosquitoes maintain dengue resistance that long in harder-hit regions remains to be seen. "The results are pretty exciting strong levels of reductions but there clearly are going to be things to be learned from the areas where the reductions are not as great," McGraw said. More than half of insect species, from fruit flies to butterflies, naturally are infected with Wolbachia but not the main dengue-spreader, Aedes aegypti mosquitoes. They're daytime biters that thrive in hot urban and suburban localities where, for now, widespread pesticide spraying is the main protection. Researchers with the World Mosquito Program first injected mosquito eggs with Wolbachia in a lab. Infected females then pass the bacteria on through their eggs. Releasing enough Wolbachia carriers, both the females that bite and the males that don't, allows mating to spread the bacteria through a local mosquito population. The approach doesn't reduce bites. Simmons said the up-front cost is cheaper than years of spraying and medical care. It's just one of multiple novel mosquito-control methods under study: Michigan State's Xi uses Wolbachia in a different way to eliminate mosquitoes. Release only male Wolbachia carriers and when they mate with uninfected females, the eggs don't hatch. Other researchers zap male mosquitoes with a small dose of radiation, sterilizing them before releasing them into the wild. Genetically modifying mosquitoes is another approach. Furthest in development is Britain's Oxitec, which gives male mosquitoes a gene to weaken their offspring so they don't survive to adulthood. Each approach has pros and cons, but "our best hope to control the mosquitoes that make us sick is to box them in with multiple technologies," said Maryland's Lovett. ___ The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely responsible for all content.
[A]:
Bacteria-infected mosquitoes take bite out of deadly dengue.