Introduction:
The establishment or occurrence of COVID-19 which is called as
chronology of this infectious disease is as this. The foremost cases
were known to be reported in December 2019. Commencing from 18th
December all the way through 29th December 2019, 5 patients that were
infected with this infectious disease were hospitalized in the midst of
acute form of the respiratory agony condition furthermore one in those
admitted patients died Park,M et al
(2020). By January 3, 2020, 40 patients got admitted in the hospital and
all of them were identified to be COVID-19 infected patients by the
laboratory confirmation and just few of them had co-morbidities like
cardiovascular, hypertension, cancer , asthma etc. it was considered
that these patients might be infected due to the hospital acquired
infections ( NOSOCOMIAL). And it was presumed that this infection might
be transmitted from one person to other person through various means
like by air droplets, coughing, sneezing, by getting close to an
infected person Bulut, C et al (2020). At beginning only patients with
symptoms were checked clinically or by the hospitals to be infected but
those with asymptomatic but having that infection were also a leading
cause of its spread because they did not know that they are infected or
not. In January 22, 2020, about 570 cases of this new infection were
reported in different a province of China. Coronavirus is a type of
viral disease that mainly affects the respiratory system of human.
Preceding outbreaks of the coronaviruses (CoVs) embrace (SARS)-CoV the
Severe acute respiratory syndrome along with (MERS)-CoV the Middle East
respiratory syndrome that have been formerly considered to be the agents
as those which have great threat to public health Lipsitch, M et al
(2020). In December 2019, a huddle of the people infected with this
viral infection got admitted in the hospitals having the preliminary
verdict as of pneumonia with an indefinite etiology. The infected
individuals were considered as they must be associated towards the
seafood as well as damp animal market present in Wuhan, Hubei Province,
China, Dong, Y et al (2020). On January 25, 2020, there were about 1975
cases were inveterate to be tainted by means of the COVID-19 within
mainland of China and with the increase in mortality rate. After this to
other confirmed reports suggested that about 5500 cases were present in
China till the end of January, 2020. After this the cases were also
reported from other countries too and the infected countries are as
follows Thailand, Taiwan Malaysia, Sri Lanka, Vietnam, Nepal, Japan,
Cambodia, Singapore, Italy, Republic of Korea, France, and Germany. Due
to the emergence of the COVID-19 cases WHO, declared it as pandemic in
March19, 2020 McMichael, T et al (2020). Now, the strategies regarding
the treatment of infected patients are just supportive because there is
no confirmed medicine or vaccine available for this infection. The other
ways of reducing its chances to avoid social contact and the
self-isolation at home can reduce the chances of its spread and also
reduces the mortality rate Zhai, P et al (2020). The virus of COVID-19
has turn out to be the main pathogens of raising the respiratory
syndrome outbreaks. There is a large family of the (+ssRNA) single
stranded RNA virus with the intention of as it could be secluded in
diverse species of animal Xie, J et al (2020). Due to its zoonotic
origin it can also spread disease from animals to human when in close
contact with each others like those of SARS-COV and MERS-COV. Amusingly,
these last viruses have possibly originated as of bats furthermore
subsequently stirring into the other mammalian species acting as host
for these pathogens Van, W et al (2020).