covid -19

COVID-19 ALL IN ONE  1)  WHAT IS CORONA VIRUS?      A  a family of viruses that cause disease in animals. Seven, including the new virus, have made the jump to humans, but most just cause cold-like symptoms.  covid-19 is closely related to severe acute respiratory syndrome (Sars) which swept around the world in 2002 to 2003. That virus infected around 8,000 people and killed about 800 but it soon ran itself out, largely because most of those infected were seriously ill so it was easier to control. Another coronavirus is Middle East respiratory syndrome (Mers), cases of which have been occurring sporadically since it first emerged in 2012 - there have been around 2,500 cases and nearly 900 deaths.  Covid-19 is different to these two other coronaviruses in that the spectrum of disease is broad, with around 80 per cent of cases leading to a mild infection. There may also be many people carryin...

spreading of corona viras The coronavirus - known as COVID-19 - spreads from person to person in close proximity, similar to other respiratory illnesses, such as the flu. Droplets of bodily fluids - such as saliva or mucus - from an infected person are dispersed in the air or on surfaces by coughing or sneezing. These droplets can come into direct contact with other people or can infect those who pick them up by touching infected surfaces and then their face. According to scientists, coughs and sneezes can travel several feet and stay suspended in the air for up to 10 minutes. It is not yet known how long the virus can survive outside a host but, in other viruses, it ranges from a few hours to months. Transmission is of particular concern on transport, where droplets containing the coronavirus could pass between passengers or via surfaces like aeroplane seats and armrests. The incubation period of the coronavirus, the length of time before symptoms appear, is between o...

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