- What is the difference between a mechanical and a biological vector of a disease quizlet?
- What are the 4 types of disease transmission?
- What are the 3 modes of transmission?
- What is biological transmission?
- What is the difference between a mechanical and biological vector?
- What is mechanical transmission?
What is the difference between a mechanical and a biological vector of a disease quizlet?
The primary difference between a biological and a mechanical vector is that: biological vectors play a role in the pathogen’s life cycle, whereas a mechanical vector spreads disease without being integral to a pathogen’s life cycle..
What are the 4 types of disease transmission?
The modes (means) of transmission are: Contact (direct and/or indirect), Droplet, Airborne, Vector and Common Vehicle. The portal of entry is the means by which the infectious microorganisms gains access into the new host.
What are the 3 modes of transmission?
Modes of transmissionDirect. Direct contact. Droplet spread.Indirect. Airborne. Vehicleborne. Vectorborne (mechanical or biologic)
What is biological transmission?
Biological transmission occurs when the vector uptakes the agent, usually through a blood meal from an infected animal, replicates and/or develops it, and then regurgitates the pathogen onto or injects it into a susceptible animal. Fleas, ticks, and mosquitoes are common biological vectors of disease.
What is the difference between a mechanical and biological vector?
Biological vectors, such as mosquitoes and ticks may carry pathogens that can multiply within their bodies and be delivered to new hosts, usually by biting. Mechanical vectors, such as flies can pick up infectious agents on the outside of their bodies and transmit them through physical contact.
What is mechanical transmission?
Mechanical transmission means the transfer of pathogens from an infected host or a contaminated substrate to a susceptible host, where a biological association between the pathogen and the vector is not necessary.