Difference Between Carrier and Vector | Carrier vs Vector

Key Difference – Carrier vs Vector

Diseases are caused by pathogenic microorganisms and infectious particles. Disease transmission occurs through vectors and carriers. Carrier is an individual which has the disease, but not symptoms; it is capable of transmitting the disease to a new individual. Vector is an organism which is capable of transmitting disease from infected individual to new individual without having the disease. This is the key difference between carrier and vector. Both carrier and vector are responsible for disease occurrence and spreading between organisms.

1. Overview and Key Difference
2. What is a Carrier
3. What is a Vector
4. Side by Side Comparison – Carrier vs Vector
5. Summary

What is a Carrier?

Carrier is an organism which is capable of disseminating the disease to another susceptible organism. Carrier does not show any signs and symptoms of the disease. But the carrier is a diseased organism or an infected individual possessing the potential disease causative agents inside the body. Hence they are capable of transmitting the disease to the next generation. There are main three types of carriers:

  • true carrier,
  • incubatory carrier
  • convalescent carrier

Diseased individuals can become carriers even after the cure of the disease. For example, typhoid fever can be again spread through feces and urine of cured people who are carriers.

AIDS is a disease caused by HIV (human immunodeficiency virus). There are HIV carriers – individuals do not show AIDS symptoms. However, they are HIV-positive carriers.