emerging viruses Flashcards
1
Q
what are the suggested reasons why viruses are emerging?
A
- habitat encroachment and mass transport
- humans coming into contact with viruses that exist in previously uninhabited places
- spread is facilitated by mass transport
2
Q
what is a zoonotic virus?
A
a virus that is transferred from animals to humans
3
Q
give examples of viruses that are transmitted via horizontal transmission
A
measles and smallpox
4
Q
what are ‘arboviruses’?
A
viruses spread by arthropod vectors (arenaviruses, bunyviruses, flaviviruses, reoviruses)
5
Q
why is it difficult to control diseases caused by arboviruses?
A
requires control of:
- insect vectors responsible for transmission
- development of vaccines for humans
6
Q
what kind of virus is dengue caused by and which vector carries it?
A
flavivirus carried by the aides aegypti vector
