Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.
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Question: Paragraph: The airline had earlier said only cabin crew operating mainland China flights could wear masks, in response to the airline's flight attendants calling for permission to wear masks on all flights globally as cases have also been confirmed in the United States, Thailand, South Korea, Japan and Taiwan. "Due to the evolving information from health authorities, we will allow crew members and frontline airport employees to wear surgical face masks when on duty at their discretion," Cathay said in a statement. The coronavirus outbreak, which began in the central Chinese city of Wuhan, struck as millions of Chinese prepared to travel for the Lunar New Year, heightening contagion risks. Wuhan's local government said it would close all urban transport networks and suspend outgoing flights from the city as of 10 a.m. on Thursday (0200 GMT), state media reported, adding that the government said citizens should not leave the city unless there were special circumstances. The Cathay Pacific Airways Flight Attendants Union said on Tuesday it had received a "tremendous" amount of emails and messages from members concerned over catching the virus given they are exposed to over 300 passengers from numerous places on a single flight. On Wednesday evening, Cathay said on its website that rebooking, rerouting and refund charges would be waived for all tickets booked on or before Jan. 21, arriving to or departing from Wuhan through March 31, an extension from the Feb. 15 date listed the prior evening. Deaths from China's new flu-like virus rose to 17 on Wednesday, with more than 540 cases confirmed. The virus has already spread beyond Wuhan to population centers including Beijing, Shanghai, Macau and Hong Kong. Cathay said that as required by the Hong Kong health authorities, it was distributing health declaration forms and will be making face masks and antiseptic wipes available at the boarding gate to passengers traveling from Wuhan to Hong Kong. "Our frontline staff are reminded to maintain good personal and environmental hygiene, and to remain alert and vigilant while being on the lookout for passengers presenting with infectious disease symptoms," the airline said. Cathay has already been hit by plummeting demand as a result of anti-government protests in Hong Kong, leading it to cut capacity and defer the delivery of four planes. Shares in Cathay have fallen by 10% since the start of January as the virus spread. Jefferies analysts said shares in Cathay and mainland Chinese carriers could remain under pressure for some time if the coronavirus situation paralleled the 2003 SARS outbreak and cases continued to increase. That coronavirus outbreak killed nearly 800 people. Claim: Cathay to let crew wear masks on all flights due to new coronavirus.

Answer: Hong Kong's Cathay Pacific Airways Ltd (0293.HK) will allow all crew members and frontline employees to wear surgical masks due to concerns over a new coronavirus, and said passengers to and from Wuhan, China, could change or cancel flights for free through March 31.

Question: Paragraph: Health Minister Olivier Veran told a briefing he could not determine at this stage when the lockdown would end. If the government were to follow the scientific council's advice, France would remain at a virtual standstill until April 28. A statement by the council, which advises President Emmanuel Macron on the coronavirus crisis, also said the lockdown was the only really efficient strategy at the moment and "needs to be strictly implemented". Prime Minister Edouard Philippe said on Monday the widespread lockdown in France could last several more weeks and his government was tightening restrictions on daily life even further. Veran also said France would heed World Health Organization recommendations to increase coronavirus testing. Health agency chief Jerome Salomon said later France would soon be able to conduct 10,000 tests a day. Salomon reported 240 new deaths from coronavirus on Tuesday for a total of 1,100, an increase of 28% that made France the fifth nation to cross the 1,000-fatalities threshold after - China, Italy, Iran and Spain. This tally only accounts for people who died in public hospitals, whereas several retirement homes have been reporting deaths in the double digits. Salomon said health authorities would soon be able to tabulate data coming from retirement homes, which will likely trigger a more dramatic increase in registered fatalities. He said the total number of infections in France had risen to 22,300, a 12% jump in 24 hours. Salomon added that 2,516 people were in a serious condition requiring life support, up by 21% from Monday, and that 8,000 hospital beds were now equipped with ventilators. Claim: French coronavirus death toll tops 1,000, lockdown likely to be extended.

Answer: France became the fifth country to report more than 1,000 deaths from coronavirus on Tuesday and a government body dealing with the outbreak suggested the national lockdown imposed last week for an initial 15 days should last at least six weeks.

Question: Paragraph: The story does not mention the cost of the vitamin supplements. The story quantifies the number of cases of AMD in the vitamin group as well as the control group. The story should have provided a denominator for these numbers so that the reader can get a sense of the size of the risk. The story does not mention any harms of b-vitamin supplements. While they are generally safe, the FDA does not regulate supplements and therefore there is no guarantee of strength, purity or safety of products. Furthermore there are some important contraindications and consumers should talk with their doctor about before taking the vitamins. The story adequately describes the current study and discusses some of its strengthes and weaknesses. The story does a particularly good job of describing the study design, the sample size and duration of follow-up. The story does not exaggerate the seriousness or prevalence of AMD. The story should have explained that there are two types of AMD: dry and wet. Dry AMD is more common, progresses more slowly and may respond to vitamin supplementation, whereas wet AMD, although more rare, progresses rapidly and may not respond to vitamins. The story quotes an expert who is not related to the study or employed by the vitamin manufacturer. The story does a good job of describing potential conflicts of interest of the quoted experts. The story mentions smoking cessation and laser treatment as alternatives. The story however might have mentioned the other prevention methods listed on the National Eye Institute website: control of diet, exercise, weight, and blood pressure. Clearly vitamin-b supplements are available, however the story should have described whether this particular combination of vitamins is available and if so, if they are available over the counter or by prescription only. The story adequately represents the novelty of taking vitamins for AMD, which is not a new idea. Given the fact that an independent expert was interviewed, it's safe to assume it did not rely solely or largely on a news release. Claim: Study: Taking B vitamins can prevent vision loss

Answer:
Age-related macular degeneration (AMD) is a common cause of vision loss in the elderly. There is no cure for AMD and once the vision is lost it cannot be regained. However, there is hope that AMD can be prevented or the rate of loss slowed using vitamin supplementation. This story reports on a new study showing that women who took a specific combination of b-vitamin supplements had a lower risk of developing AMD after 7 years. The story does a good job of describing potential conflicts of interest of the quoted experts, one of whom is not involved in the research or funded by the vitamin manufacturer. The story adequately represents the availability and novelty of the supplements, although it is not clear if this particular combination of vitamins is available and if so, if they are available over the counter or by prescription only. The story quantifies the number of cases of AMD in the vitamin group as well as the control group. The story should have provided a denominator for these numbers so that the reader can get a sense of the size of the risk. The story could have been improved by describing the cost of the vitamins as well as potential harms. While vitamins are generally safe, the FDA does not regulate supplements and therefore there is no guarantee of strength, purity or safety of the product. Furthermore there are some important contraindications and consumers should talk with their doctor before taking the vitamins.