The COVID-19 variants: an overview
DOI:
https://doi.org/10.18203/2394-6040.ijcmph20213826Keywords:
Variant, SARS-nCOV-2, Alpha, Beta, Gamma, DeltaAbstract
The outbreak of novel coronavirus disease (COVID-19) was initially noticed in a seafood market in Wuhan city in Hubei Province of China in mid-December 2019 which has now spread to 223 countries/territories/areas worldwide. World Health Organization (WHO) under International Health Regulations (IHR) has declared this outbreak as a public health emergency of international concern (PHEIC) on 30th January 2020 subsequently declared a pandemic on 11th March 2020.
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