DOI: http://dx.doi.org/10.18203/2394-6040.ijcmph20210856

Community transmission of a virus: a global pandemic overview

Ravindra B. N., Lipika Das, Darshan J. C., Sayantan Ghosh, Berlin P. Kurian, Prolay Paul, Meghana A. Reddy, Satish Kumar B. P.

Abstract


The word ‘pandemic’ was originally a derivative from two Greek words “pan” referring “all” and “demos” “people”. “An epidemic arising over a very diverse area, crossing the global margins, and typically affecting a huge number of people” is defined as a pandemic. Therefore pandemics are recognized by their topographical scale instead of severity of ailments. Even though the term “pandemic” has not been clearly defined, wide  geographic  extension,  disease  movement,  novelty,  severity,  high  attack  rates  and explosiveness, minimal  population immunity,  infectiousness and  contagiousness  can be considered as some of the key features of this term. Till today, globe has encountered several notable pandemics caused by virus such as Spanish flu, acquired immune deficiency syndrome (HIV/AIDS), smallpox, SARS, Ebola and Nipah disease whose causative organisms are H1N1, human immunodeficiency virus (HIV), Variola virus, DEN-1/DEN2/DEN3/DEN4, coronavirus, Ebola virus (Zaire/Sudan/Tai/Cote D’ivoire), and Nipah virus (NiV) respectively. This review includes detailed data regarding various viral pandemics. Analyzing the history, clinical manifestation, pathogenesis, management and precautions of several viral pandemics which will promote and spread the awareness among the public as well as the healthcare system.


Keywords


Community transmission, Corona virus, Influenza, Pandemic, Virus

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References


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