Inclusion Criteria:  Above 18 years of age Have positive COVID PCR on nasopharyngeal and/or oropharyngeal swabs classified as severe* COVID-19 according to WHO guideline Consent given by the patient or first degree relative  Exclusion Criteria:  Critical COVID-19 patients Pregnant females Previous allergic reaction to immunoglobulin treatment Patient given immunomodulatory drug (e.g. tociluzumab) Patient requiring 2 inotropic agents to maintain blood pressures Known case of any autoimmune disorder Chronic kidney disease Known case of thromboembolic disorder Aseptic meningitis