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Image result for covid 19
Some people hope that outbreaks of the new coronavirus will wane as temperatures rise, but pandemics often don't behave in the same way as seasonal outbreaks.
 Perhaps unsurprisingly, many people are now asking whether we can expect similar seasonality with
Covid 19.Since it first emerged in China around mid-December, the virus has spread quickly with the
number of cases now rising most sharply in Europe and US.
 Many of the largest outbreaks have been in regions where the weather is cooler, leading to
speculation that the disease might begin to tail off with the arrival of Summer. Many experts however
have already cautioned against banking too much on the virus dying down over the summer.
Image result for covid 19
 The virus that causes Covid 19 which has been officially named SARS-CoV-2- is too new to have any firm data on how cases will change with the Seasons. The closely related Sars virus that spread in 2003 was contained quickly, meaning there is little information about how it was affected by the Seasons.

 But there are some clues from other coronaviruses that infect humans as to whether Covid 19 might
eventually become seasonal.
 There is some hope that as temperature warm up in the Northern Hemisphere, cases of coronavirus will start fall.
A study conducted by10 years ago by Kate Templeton, from the centre for infectious diseases at the
University of Edinburg, UK, found that three coronaviruses all obtained from patients with respiratory
tract infections at hospital and GP surgeries in Edinburg-showed marked winter seasonality.This
viruses seemed to cause infectious mainly between December and April- a similar to that scene with
influenza.A fourth coronavirsus, which was mainly found in patients with reduced immune systems,
was for more sporadic
 There are some early hints that Covid 19 may also vary with the seasons. The spread of outbreak of
the new disease around The World seems to suggest it has a preference for cool and dry conditions.
 An unpublished analysis comparing the weather in 500 locations around the world where there have
been Covid 19 cases seems to suggest a link between the spread of the virus and temperature wind
speed and relative humidity. Another unpublished study has also shown higher temperature are
linked the lower incidence of Covid 19, but notes that temperature alone cannot account for the
global variation in incidence.
Image result for covid 19 temperature
  Further as yet and published research, products that temperature warm and cold climates are the most vulnerable to the current Covd 19 outbreak, followed by arid regions. Tropical parts are the world are likely to be least affected, the researchers say," pandemics of don't follow the same seasonal patterns seen in more normal outbreaks."

 But without real data over a number of seasons, researchers are relying upon computer modelling to
protect what might happen over the course of the Year.
Extrapolating data about Covid 19`s seasonality based on endemic coronaviruses-meaning they have
been circulating in human population for sometime is challenging, not least because endemic viruses
are seasonal for a number of reasons that might not currently apply to the Covid 19 pandemic.
Eventually we would expect to see Covid-19 becoming endemic, says John Albert, a professor of
infectious Disease Control who specializes in viruses in Karolinska Institute of Stockholm. And it
would be really surprising if it did not show seasonality then the big question is whether the sensitivity
of this virus to the seasonal will influence its capacity to separate in a pandemic situation. We don't
know for sure, but it should be in the back of our heads that it is possible.
  We need to be cautious, therefore when using What we we know about the seasonal behavior of
other coroviruses to make predictions about the current Covid 19 pandemic. But why are related
coronaviruses seasonal, and why why does that offer hope for this outbreak
Coronaviruses are a family of so called enveloped vruses. This means they are coated in an oily coat,
known as lipid bilayer, studded with proteins that stick out like spikes of a crown,helping to give them
their name-corona is an ancient Greek for crown
Research on other enveloped viruses suggests that this oily coat makes the viruses more susceptible
to heat than those that don't have one. In colder conditions,the oily coat hardens into a rubber like
state,much like fat from cooked meat will hardens as it cools,to protect the virus for longer when it is
outside the body.Most enveloped viruses tend to show strong seasonality as a result of this.

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