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Can i catch covid twice?

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It can not be assumed that if you had covid positive then you are safe from it in future.Its widely believed that your previous infection may prevent you from getting sick but that doesn’t necessarily mean that you can not become infected and  spread it to others.You might think you are safe because your antibodies are there but you are still able to spread it to others for a short period of time. Covid-19 affects different people in different ways.Mostly people will develop mind symptoms and recover without hospitalization. Common symptoms fever dry cough tiredness Less common symptom sore throat body ache  loss of taste or smell skin rash headache The immune system fights off foreign pathogens , such as viruses and bacteria. Specialized immune cells, called B-lymphocytes identify antigens on the surface of invading cells. When a B cell detects a new antigen , it causes the production of proteins , called antibodies, that bind to antigens.Once an antibody locks onto an ant...
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Covid vaccines

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    The Immune System is the body’s defense against infection.To understand how COVID-19 vaccines work, it helps to first look at how our bodies fight illness. When germs, such as the virus that causes COVID-19, invade our bodies, they attack and multiply. This invasion, called an infection, is what causes illness. Our immune system uses several tools to fight infection. Blood contains red cells, which carry oxygen to tissues and organs, and white or immune cells, which fight infection. Different types of white blood cells fight infection in different ways: Macrophages are white blood cells that swallow up and digest germs and dead or dying cells. The macrophages leave behin d parts of the invading germs, called “antigens”. The body identifies antigens as dangerous and stimulates antibodies to attack them. B-lymphocytes are defensive white blood cells. They produce antibodies that attack the pieces of the virus left behind by the macrophages. T-lymphocytes are another type ...
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Old Habits Die Hard

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 We develop habits at an early age because of inexperience. We reinforce those habits day by day and step by step in our daily life.Old habits allow us to get in to bad habits sometimes socially and sometimes unintentionally.  Perhaps we fear change and we are scared of alternatives to speculate as long as we get what we savour and delight in. Good habits We develop good habits in our childhood like namaz,book reading, honestly,truthfulness,respect elders and hardworking.  Bad habits   Lying,steeling,smoking, misbehaving are the habits which are not acceptable in any society or culture.  Nail Biting   One of the bad habit that people in general have is nail biting.If I say that i am not one of them,I would be lying.I found myself in that bad habit. I bite my nail in nervousness and frustration.My fingers look extremely bad and that day i decided to break this habit.I bought nail colors and promise myself to grow them and paint them. Unhealthy Breakfast Well...
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