“Trained immunity” from Mycobacterium spp. exposure or BCG vaccination and COVID-19 outcomes

• Samer Singh ,

  * E-mail: samer.singh10@bhu.ac.in, samer@pu.ac.in

  Affiliations Centre of Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India, Department of Microbial Biotechnology, Panjab University, Chandigarh, India

  https://orcid.org/0000-0002-0921-1686

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• Rajendra Prakash Maurya,

  Affiliation Regional Institute of Ophthalmology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India

  https://orcid.org/0000-0001-9343-6003

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• Rakesh K. Singh

  Affiliation Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, India

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