Saturday, June 9, 2018

VIRUS OUTBREAK


Infections don't simply fly up out of the blue. They're in us, on us, surrounding us unobtrusively and some of the time loudly they exist. Not all the viruses are harmful only few of them i.e., an only small proportion of them cause diseases, which are able to create havoc in this current world. In recent days two viral outbreaks have been highly recorded namely Ebola, Nipah which are zoonotic viruses causing Zoonosis, a disease which exists in animals but gets transferred to humans at times which may happen accidentally. These viruses not only affect humans but also affect non-human primates. Bats play an important role as host for Nipah virus and also for Ebola virus. Not all the viruses can withstand transmission among humans. As the hereditary attributes fluctuate from every individual it turns into an obstruction for an infection to outperform. They become pandemic by jumping among humans which get spread all over the globe.


Viruses are host dependable. They either stay inside the host or outside for a short span of time during transmission. Anyone of the environmental conditions would degrade them. Viruses do evolve over time due to genetic material presence along with selection pressure caused by various agents/ factors. And that’s how new viruses emerge, which makes difficulty in inventing new medicines/ vaccines.
These changes cause an outbreak.



On continues evolution of some viruses it became hard to develop a vaccine which leads to failure whereas some viruses don’t evolve for long run due to which vaccine development is a success in that case. We could never predict the outbreaks of the virus and hence a surveillance system is required for monitoring in this globalized era.

1 comment:

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