(CNN)Scientists are learning more each day about the mysterious novel coronavirus and the symptoms of Covid-19, the disease it causes. Fever, cough and shortness of breath are found in the vast majority of all Covid-19 cases. But there are additional signals of the virus, some that are very much like cold or flu, and some that are more unusual.Any or all symptoms can appear anywhere from two to 14 days after exposure to the virus, according to the US Centers for Disease Control and Prevention.Here are 10 signs that you or a loved one may have Covid-19 — and what to do to protect yourself and your family.1. Shortness of breathShortness of breath is not usually an early symptom of Covid-19, but it is the most serious. It can occur on its own, without a cough. If your chest becomes tight or you begin to feel as if you cannot breathe deeply enough to fill your lungs with air, that’s a sign to act quickly, experts say. “If there’s any shortness of breath immediately call your health care provider, a local urgent care or the emergency department,” said American Medical Association president Dr. Patrice Harris.”If the shortness of breath is

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