Explain how a vaccination can prevent an illness.

A vaccine introduces a dead or inactive pathogen such as components of a virus or bacteria. The host (the person who receives the vaccination) will develop an immune response to this pathogen. The immune response involves white blood cells which will bind to the pathogen and produce antibodies. These antibodies will bind to specific antigens (different types of bacteria and viruses have different antigens on their surface which are specific to that pathogen). If the person became infected by the same type of pathogen again, antibodies will be produced by your ‘memory’ white cells. These antibodies are produced very quickly and in large amounts during reinfection. The antibodies bind to the pathogen and kill it.

Illustration of a video tutorial

Need help with Human Biology?

One to one online tuition can be a great way to brush up on your Human Biology knowledge.

Have a Free Meeting with one of our hand picked tutors from the UK’s top universities

Find a tutor

Related Human Biology GCSE answers

All answers ▸

Explain how negative feedback mechanisms help the body achieve homeostasis

Describe the process of eating to defecation of food.

What does the cornea do?

Explain why the concentration of glucagon in the blood rises before eating a meal.

We're here to help

+44 (0) 203 773 6020support@mytutor.co.ukContact us
Facebook logoTwitter logoGooglePlus logoLinkedIn logo

© MyTutorWeb Ltd 2013–2021

Terms & Conditions|Privacy Policy