There are many species that produce respiratory and gastrointestinal illness in humans and animals. THE VIRUSĬorona viruses are a family of viruses made from RNA instead of DNA. I have been asked hundreds of questions about Covid-19 over the past year and have attempted to include all the answers in this document. My goal is to help you make informed decisions for protecting your health and the health of those you care about and to be able to critically evaluate breaking news. I have updated it periodically, as new data and new perspectives emerged. I began posting this guide to Covid-19 in February 2020, to organize my research into the emerging science and to cut through the deluge of false information on the Internet and the misleading information being repeated in news cycles. People who have recovered from the infection often show long term deficits in cognitive function, even after relatively mild disease. Heart failure, circulatory problems, blood clots, digestive disorders, neurological and psychiatric symptoms, and autoimmune diseases may complicate Covid-19. Covid-19 is clearly not just a bad case of the flu. Many people who recover from the acute illness are left with symptoms that last for weeks or months and may fluctuate from day to day. Unusual and mysterious manifestations of Covid-19 are increasingly common. As of this writing, about 1 in every 800 people in the U.S. More than 80% of those excess deaths occurred in people with Covid-19 and the others appear to be deaths from chronic conditions like heart disease that went under-treated because of the pandemic. During 2020, the total number of deaths in the U.S. for the year 2020, and is likely to continue in that same position during 2021, whatever changes are created by mass vaccination. It is the third leading cause of death in the U.S. In early December, 2020, Covid-19 became the leading cause of death in the United States. By late summer 2020, the hospital mortality rate for Covid-19 had dropped to 7.6%, which is still high (discussed below in RATES, at the end of this guide). In the New York metro area, during the first 5 weeks of the pandemic, the mortality rate for hospitalized patients in the Northwell Health system was 21% 12% received invasive mechanical ventilation, and 3% required kidney transplantation. (3) Although 80% of infected people experience a trivial illness or have no symptoms at all, about 3.5% develop a catastrophic disease requiring hospitalization and intensive care, which is associated with severe complications.The CDC has concluded that 59% of cases have been infected by someone who was asymptomatic. (2) Covid-19 is often spread by people who have no symptoms or have just developed very mild symptoms.(1) It is highly contagious, spreading readily within groups of people.The Covid-19 pandemic has brought the world to a standstill for 3 reasons: As with everything else about Covid-19, the story is dynamic and may change with new information. They are discussed in the sections on IMMUNITY, CORONAVIRUS BIOLOGY and MAKING SENSE OF THE MUTATIONS. New mutations of the virus that causes Covid-19 are generating concern because they are increasingly more contagious and may be less responsive to existing vaccines. I’ve summarized my present thoughts about the vaccines toward the end of this guide in THERAPEUTIC PROFILES. Approval of vaccines for prevention of Covid-19 is generating enthusiasm and pushback.
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