Which one of the following is not an example of a type IV hypersensitivity?

latex allergy

Contact dermatitis (e. g., contact with poison ivy)

a positive tuberculin skin test

hemolytic disease of the newborn

Option (4).

Explanation:

Hypersensitivity may be defined as the hyper immune response of the body. Hypersensitive is also known as hyper sensitive reaction that may be uncomfortable and harmful for the individual.

Type IV hypersensitive reaction is also known as delayed type of hypersensitivity that are generally mediated by T cells. Hemolytic disease of new born is an example of Type II hypersensitive reaction and not related to Type IV hypersensitive reaction.

Thus, the correct answer is option (4).