A heavity bleeding and bruised road accident victim was brought to a nursing home . The doctor immediately gave him an injection to protect the patient's against a deadly disease.
(a ) Write what did the docter inject into the patient's body .
( b) How do you think this injection would protect the patient againts the disease ?
( c) Name the disease against which this injection was given and the kind of immunity it provides .

Explanation

( a) If the patient's body , the doctor has injected antiserum containing preformed antibodies against the causeative oraganism or toxin produced by it .
( b) The disease injected by the doctor had antibodies , which would protect te paitent against the disease and provide him humoral immunity . ( c) The disease against which this injection was given is tetanus caused by clostridium tetani , which usually exits in enivorment as sposes and may gain access to the body through wound .The kind of immunity that injection containing antiserm provides is passive immunity as preformed antilbodies are used because fast action is required in this emergency case.