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In the last few months the world has been forced to learn an entirely new language, a language based on the virus that has changed our world in so many ways. We thought it'd be useful to define the phrases and terms we're all becoming so familiar with, and look into the science behind them in a Covid context.
Explain ‘sporadic’
A sporadic virus is one that occurs both infrequently and irregularly.
What is an outbreak?
An outbreak is defined as a time when something suddenly begins, especially a disease or something else dangerous or unpleasant. When we first heard about the virus, before Xmas 2019, news channels were talking about 'outbreaks' in China, and the first instance of the disease in the UK, in Brighton, drove a small but deadly outbreak.
Define a ‘spike’
The word 'spike' comes with two very different meanings in our Covid world. The virus itself is covered in spikes, every coronavirus's most distinguishing feature. An average coronavirus particle has 74 spikes on its surface, each roughly 20 nanometres long.
'Spikes' – also called surges – define what happens when the disease suddenly pops up in greater numbers than expected in one particular area. We're currently seeing spikes across England, in France, and in many other nations. They're all starting to suffer after either reducing restrictions too early, not making strong enough restrictions in the first place, or suffering new cases spread by people travelling in from abroad.
What does epidemic mean?
The word epidemic describes the fast spread of a disease to a large number of people in one place within a short timescale. If we're talking about a meningococcal infection, for example, an epidemic would have an infection rate of more than 15 cases per 100,000 that carries on for two weeks in a row.
What defines a pandemic?
Once a disease spreads beyond the borders of one nation and widely into other countries, crossing land, sea and air, it's officially a pandemic. At this stage those in power have lost control of the illness and high numbers of people across a large area are affected.
Explain endemic
Many scientists these days believe Covid-19 has already turned endemic. Just like the common cold and flu, it is predicted to come back year after year, circulating the globe for the foreseeable future. This is one of the reasons science is so keen to create an effective vaccine to carry forwards.
Covid vaccination
HIV first raised its head in the early 1980s. These days people living with HIV still take multiple drugs daily to stay healthy. This week, for the first time, we've seen reports about a Brazilian man who is probably the first person ever to be cured of the disease. He has been able to maintain long-term HIV remission thanks to a year-long course of intensive anti-retroviral drugs. It's great news but, as the timescale reveals, there's no real reason to believe a vaccination for the Covid virus will be discovered quickly. We potentially face a very long haul indeed.
The world has developed a basic flu vaccination, which 'will help prevent you getting the flu.' Like the common cold – which is spread by four main coronaviruses that have been circulating the world for hundreds if not thousands of years – the flu virus morphs and changes on its journey. Will we need to develop a new vaccine every time this virus mutates? There's no reason why not. We could easily be that unfortunate.
Apparently the four viruses that make up the common cold we all know and love today started life just as deadly, or even more deadly than the so-called Spanish Flu, Ebola, AIDS, SARs, MERS, bird flu and the rest. There's no real reason why the Covid-19 virus won't morph into something less dangerous over time. But it could just as easily become even more dangerous. The fact is, nobody knows.
We don't know such a lot!
At the moment the unknowns around this virus far outweigh the knowns. Until we know more, it's vital to keep as many people safe from infection as humanly possible, and in most commercial, public-facing circumstances that means disinfection. UVC lights are the best possible way to disinfect spaces against Covid-19, and the science is proven. If you run a public-facing business, let's talk about keeping people safe.