Maternal antibodies do not occur for-: (A) Polio, (B) Diphtheria, (C) Whooping cough, (D) Tetanus
Answer is C. <p> In Whooping cough maternal antibodies do not occur . So infants are susceptible to infection. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:164. <\p>