Abstract
The coronavirus 2 illness (Covid-19) global pandemic has resulted in severe infection causing fever, cough, shortness of breath, pneumonia and even death. WHO is monitoring intimately in coordination with scientific experts and government agencies, the transmission rate of this virus and its neoteric variants identified worldwide. Since the start of year 2020, all the health authorities of each country are working in collaboration to explore the scientific information on coronavirus and providing essential guidelines to save humans. Undoubtedly, this pandemic impacted many lives regardless of all preventive steps followed to minimize its transmission. Currently, multiple anti Covid-19 vaccines are available everywhere and government authorities are monitoring and providing the guidelines for taking booster dose of vaccine to minimize and control the transmission of different variants of this virus. It is rational to state that some of the available anti Covid-19 vaccines may not be highly efficient against new emerging variants so further investigation and research are the need of hour. Therefore, the present review portrayed the features of the novel variants and mutations of coronavirus 2 (Covid-19) and therapeutic updates associated with the effectiveness of different vaccines against new strains reported worldwide.
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