The Plasma Therapy
Plasma therapy (PT) is a passive immunization technique, which involves the administration of plasma collected from individuals who have recovered from an infection and developed antibodies against the pathogen, in a patient who is sick and infected with the same type of virus. PT can prevent a clinical infection, or prevent the worsening of an existing infection, by helping the host organism to fight the virus. Today, PT is mainly based on pooled immunoglobulin preparations that contain high concentrations of antibodies. However, some evidence shows that PT is more effective when administered prophylactically or used early after the onset of symptoms (5-6).