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 ▸

What are the stages of mitosis?

What is Sickle Cell anaemia and what are the risks of having it?

What is the pituitary and what role does it have?

Describe the process of eating to defecation of food.

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2022

Terms & Conditions|Privacy Policy