(iv) Convalescent plasma or immunoglobulins:
Plasma therapy has been made world headline as one of the most
successful treatment against Covid-19. Convalescent plasma has been used
for passive immunization because it contains antibodies against
coronavirus in recovered individual.
The Drug Regulatory Authority of Pakistan approved clinical trials for
this therapy. Some hospitals of Pakistan have begun to use this therapy
for severe patients of Covid-19 (Ahmed, 2020).