Essay on Corona Virus 300 words please fast
introduction - how, when and where
Answers
There are viruses everywhere. Millions and trillions of them. Only around 5,000 have been studied. They are in every organism.
So what about Coronavirus? This virus has another capsule, as do many virus strains. There is a halo appearance to this capsule with small mushroom type bits on it. Hence it is called corona.
The human immune system is a remarkable defence army. There is no dithering politician to control its timing. Normally the human body has had numerous mild infections since birth. The immune system immediately does what scientists are trying to do except it works faster. It looks at hostile cells, studies it (yes believe it or not) and then builds counter cells, enzymes etc to destroy the hostile invader. This has nothing to do with witches brew.
Once the immune system has dealt with an invasion, it memorises it. Next time it is even quicker off the mark. But sometimes the invasion is overwhelming, especially in older people where the immune system is also in retirement mode, or in people with illnesses such as diabetes where it has other distractions and is also slightly compromised. In these cases the virus gets an advantage and may decapacitate the body’s response. The person dies from lack of oxygen reaching vital organs.
The Covid-19 virus is called a novel virus, meaning a new mutation. That’s why people do not have pre-existing immunity. The body is building immunity on the go.
Viruses change some of their RNA nucleotide sequences in a number of clever ways when they realise hosts have effective defences. The host has to start building immunity all over.
It needs to be said that there are good viruses as well. Viruses favourite victims are bacteria. There
In Russia and some Eastern European countries, viruses are used as phages to deal with antibiotic resistant bacteria. The science is too young and expensive in the rest of the west yet but not in Russia. Don’t ask me why. Big Pharma etc?
Phage science is now looking at using viruses to kill cancer cells in the body. This is an interesting and exciting development. Since viruses can be specific, they are being developed in laboratories to target cancer cells. The science is in its infancy and still looking at how the body immune system can permit this exception.
Phages clean our sewers of bacteria, sterilise a lot of our plant food supply and help some plants withstand hard weathers.
Sadly there is no cure for the bad viruses such as SARS-CoV-2 (Covid-19) when they are on the prowl. We can’t wage a war on viruses or send them packing. There are nearly a billion viruses in a square meter of earth surface! And they also literally fall from the sky as they exist in the outer stratosphere of earth too. We have to hide from a pandemic virus or build immunity.
Best strategy now is, be a coward, be smart and hide from the virus until its numbers go down substantially. Don’t stare it in the eye. Wait for a scientist, not a holyman or a politician, find a vaccine. Even then, there is no guarantee as these guys mutate. Forget the conspiracy theories, these viruses have been at this game for millions of years even before the human race came on the scene. 300 millions years apparently.
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