Vector || Vector Definition ||What is Vector ? | Classification of Vector in Microbiology

Vector || Vector Definition ||What is Vector ? | Classification of Vector in Microbiology

Vector || Vector Definition ||What is Vector ?

You can say that vector is  an arthropod or any living carrier (e.g. snail) that transfer an infectious agent to a susceptible individual.

Types or Classification of Vectors

1.Mechanical Vector

The infectious agent is mechanically  transported by a crawling or fying arthropod through soiling of its feet or proboscis;or by passage of organisms through its gastro-intestinal tract and passively excreted.

There is no development or multiplication of the infectious agent  on or within the vector. e.g fly, cockroaches, bugs etc.

2. Biologic Vector

An arthropod or insect where the parasite multiplies or undergoes some developmental change with or without maturation is called biologic vector.

Types: 3 types

1. Propagative: undergoes no cyclical change but multiples in the body of vector e.g. plague bacilli in rat flea.

2. Cyclopropagative- Undergoes cyclical changes& multiplies in the body of vector. e.g malaria parasite in Anopheles mosquitoes.

3.Cyclodevelopmental-Undergoes cyclical changes and no multiplication in the body of vector.e.g.filarial parasite in Culex mosquitoes.


Read More:Zoonosis