5 Questions
Which disease is transmitted by touch contact?
Dermatomycosis
Which zoonoses require more than one vertebrate host but no invertebrate host for completion of the agent’s developmental cycle?
Cyclo-Zoonoses
Which disease is transmitted through indirect contact?
Influenza
Which zoonotic infection is transmitted biologically by invertebrate vectors?
Meta Zoonoses
Which zoonotic disease involves man as one of the vertebrate hosts in its cycles?
Hydatid disease
Study Notes
Zoonoses
- Zoonoses are diseases and infections that are naturally transmitted between vertebrate animals and humans.
- There are over 200 known types of zoonoses.
- Zoonoses comprise a large percentage of new and existing diseases in humans.
Transmission of Zoonoses
- Transmission of infection requires three elements: a source of pathogens, a susceptible host, and a means of transmission for the microorganism.
- Transmission can occur through:
- Direct contact with the animal.
- Vector (such as fleas or tick).
- Food or water contamination.
Types of Zoonoses
Reverse Zoonoses
- Reverse zoonoses: Infectious disease of people occasionally transferred to animals and then transferred back to people.
- This type of transmission occurs when an infection is transferred from humans to animals and then back to humans.
Direct Zoonoses
- Direct zoonoses are transmitted from an infected vertebrate host to a susceptible vertebrate host.
- Transmission occurs through:
- Direct physical contact with an animal.
- Vehicle or mechanical vector.
- Only a single vertebrate species is required to perpetuate this infection cycle.
Test your knowledge on zoonoses and disease transmission with this quiz. Learn about different methods of transmission such as aerosol, direct contact, and oral transmission.
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