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To test for the new coronavirus, take a deep breath and hold for more than 10 seconds. If you complete it successfully without coughing, discomfort, stuffiness or tightness it proves there is no fibrosis in the lungs, basically indicating no infection. There is no evidence to suggest this test can show if you have the new coronavirus. If the new coronavirus gets into your mouth, drinking water or other liquids will wash them down through the oesophagus. Once they’re in the stomach, the acid will kill the virus. If you don't drink enough water more regularly, the virus can enter your windpipes and into the lungs. This is incorrect. Drinking water does not prevent an infection and there have been cases where the virus has survived in the stomach and affected people’s intestines. A post advising people who suspect they have Covid-19 to hold their breath to check for lung fibrosis and drink water regularly to ensure that any virus caught orally will be washed into the stomach and killed, has been shared several hundred thousand times on social media and shared on WhatsApp. There is no evidence to suggest medical experts have provided any advice like this for self-checking or preventing the new coronavirus. There is no evidence to suggest that being able to hold your breath indicates there is no infection, as the ability to do this will vary from person to person even when they’re healthy. Professor Ben Neuman, Chair of Biological Sciences at Texas A&M University-Texarkana, told Full Fact that while it is true that the infection could cause fibrosis, holding your breath would not necessarily diagnose if you have this. There isn't a one-size-fits-all test that can diagnose fibrosis – everyone is different and how long a person can hold their breath will vary, particularly if someone is nervous at the time about possibly having a scary-sounding virus. If you have chronic shortness of breath, or if you start noticing that it is difficult to breathe, it could be for a number of reasons, of which this virus is only one, and a fairly unlikely one at that. People with shortness of breath should contact a doctor and then make sure to follow the local protocols for when, whether and how to turn up for an exam. Shortness of breath and coughing have both been listed by the NHS and Public Health England as symptoms, and the former recommends self-isolating for seven days if you suspect you are infected. The latest advice from the NHS is available here. The claim that consuming liquids will prevent you catching the virus is also incorrect and the World Health Organisation has said: While staying hydrated by drinking water is important for overall health, it does not prevent coronavirus infection. Professor Neuman says this advice has a kernel of truth, but is mostly bonkers, but he also adds that staying hydrated while ill is a good idea in general.The virus that causes COVID-19 can only enter a cell that has just the right proteins on the outside, and those are only commonly found in two places in the body—mainly in the lungs, on a cell called a type II pneumocytes, but also in the small and large intestines. For most people, infection will begin and end in the lungs, as the virus moves between the cells that it is able to enter. But for a smaller number of infected people, the virus will cause diarrhoea, most likely by infecting those cells in the inner lining of the intestine. Usually the acid in the stomach would be enough to break down the virus so that it becomes harmless, but it happens often enough that the virus seems to arrive at the intestines in one piece that the idea of deliberately pushing the virus to the intestines doesn't make a lot of sense. When asked about the claims, Public Health England told Full Fact that they recommend people stick to current NHS advice. The World Health Organisation and NHS England have both provided clear guidance on how to protect yourself from the virus and what to do if you start to experience symptoms. We’ve got more details on the NHS’s advice here. This article is part of our work fact checking potentially false pictures, videos and stories on Facebook. You can read more about this—and find out how to report Facebook content—here. For the purposes of that scheme, we’ve rated this claim as false because neither of these tips are ways of preventing or indicating if you have the new coronavirus.
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