Vaccination
Vaccination

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.

Free course

Vaccination

7.6 Summary of Section 7

  1. The cost of developing and testing a new vaccine is considerable; there is no incentive to develop a vaccine if there are more cost-effective or accessible ways of controlling the disease, if the population at risk cannot pay the market price, or if the disease is so rare that a vaccine would not be profitable.

  2. Organisational difficulties in the delivery of mass vaccination programmes can limit their efficacy and (in certain cases) lead to perverse effects, such as an increase in the proportion of adverse outcomes if sub-threshold vaccine coverage increases the average age at infection.

  3. Quality control procedures on vaccines must be rigorously applied to ensure that they deliver an effective dose and are not contaminated by potentially harmful material.

  4. Perceptions of risk associated with a vaccine can lead to a decline in its uptake and subsequent resurgence of the disease. The level of concern about the safety of a vaccine tends to fluctuate in an inverse relationship with the perceived level of threat from the disease it controls. As disease incidence declines, the safety of the vaccine becomes an overriding consideration.

S320_1

Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has 50 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to university level study, find out more about the types of qualifications we offer, including our entry level Access courses and Certificates.

Not ready for University study then browse over 900 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus