Answer:
The correct answer is herd immunity.
Explanation:
Herd immunity is the resistance against a contagious disease provided by the immune individuals which makes the major part of the population to few susceptible individuals in the community.
So as most of the population is immune to the disease therefore that disease is not able to overpass these immune individuals and the susceptible person is protected indirectly from that contagious disease. By vaccinating most of the people against a disease we can gain herd immunity. So the right answer is herd immunity.
This model was called GENERAL ADAPTATION SYNDROME [GAS].
Hans Selye proposed the three stages model of GAS, the three stages are alarm, resistance and exhaustion. During the alarm stage, the sympathetic nervous system prepares the body for action. In the resistance stage, the sympathetic nervous system recruits resources that will be needed to maintain high level of activity and energy. In the exhaustion stage,the parasympathetic nervous system takes over and the body experiences physical illnesses.
Answer:
At this visit, David should receive one dose of IPV, one dose of MMRV and one dose of DTaP.
Explanation:
During this visit David should receive 3 vaccines:
the last dose of IPV, which protects the kid against polio a disease that causes paralysis and death.
The last dose of MMRV, which protects the individual against rubella a disease spread through direct contact with an infected person and through the air.
The last dose of DTaP, a vaccine that prevents tetanus, a fatal disease that starts with difficulties to breath.
