5. immune evasion

Question 1

what have parasites done?

Answer 1

Parasites have evolved ways of evading the immune system

Question 2

what do endoparasites do?

Answer 2

Endoparasites mimic host antigens to evade detection and modify host immune response to reduce their chances of destruction

Question 3

what does antigenic variation allow?

Answer 3

Antigenic variation in some parasites allows them to change between different antigens during the course of infection of a host

Question 4

what else does antigenic variation allow?

Answer 4

It may also allow re-infection of the same host with the new variant

Question 5

what do some viruses do?

Answer 5

Some viruses escape immune surveillance by integrating their genome into host genomes, existing in an inactive state known as latency

Question 6

when does the virus become active again?

Answer 6

The virus becomes active again when favourable conditions arise