Vaccine-preventable diseases

Vaccination to prevent disease is commonplace in Europe today. Certain diseases have already been eradicated by rigorous vaccination campaigns, while others are hoped to be eliminated soon, such as measles and congenital rubella. Yet challenges remain. New vaccines that are being developed against existing diseases such as infections with human papillomavirus and may be developed against newly emerging diseases in the future, need to be monitored and evaluated.

Some vaccines are still underutilised. Although vaccination has become increasingly safe and effective, one of the major challenges we face is opposition in the population against immunisation. We may have become too used to the benefits of vaccination, some diseases now being so rare that we do not even remember how devastating their consequences can be. Immunisation programmes are threatened by insufficient information, by unsubstantiated rumours about adverse effects, or by groups that, for religious or other reasons, are opposed to vaccination. Communication of the correct scientific facts it is therefore important to enable both policy makers and the public to make an informed choice.

Vaccine-preventable diseases under EU surveillance

Find out more about the diseases that vaccines prevent: latest updates, current and past disease threats and outbreaks, surveillance and disease data, preventive measures and basic disease facts.

Cholera bacteria, TEM. © Science Photo Library

Cholera is an acute diarrhoeal infection caused by the bacterium Vibrio cholera of serogroups O1 or O139. Humans are the only relevant reservoir, even though Vibrios can survive for a long time in coastal waters contaminated by human excreta.

TEM of Rubella viruses. © Science Photo Library

Congenital rubella is the infection of a foetus with rubella virus following the infection of the mother during pregnancy. ‘Congenital’ indicates that the foetus also becomes infected during pregnancy.

Coronavirus

See all information on COVID-19, situation updates, risk assessments, questions and answers, latest evidence, surveillance and laboratory guidance and how to protect yourself and others.

Coloured TEM of Corynebacterium bacteria. © Science Photo Library

Most people with diphtheria will have a respiratory tract infection, with a sore throat and low-grade fever in the first few days of the illness.

Hepatitis B viruses, TEM. © Science Photo Library

Hepatitis B is a liver disease that results from infection with the hepatitis B virus (HBV) and is spread through contact with infected body fluids or blood products.

Cytological Specimen Showing Cervical Cancer. Credit: US National Cancer Institute

Cervical cancer is the second most common cancer after breast cancer to affect women aged 15–44 years in the European Union.

Flu viruses in the throat, artwork. © Science Photo Library

Influenza, also known as flu, is a respiratory illness caused by influenza viruses. Influenza viruses are categorised into types A, B, C, and D.

Haemophilus influenzae bacteria. © Science Photo Library

Haemophilus influenzae type b (Hib) is an obligate human pathogen and an important cause of invasive bacterial infections in both children and adults, with the highest incidence among young children.

Streptococcus pneumoniae bacteria, SEM. © Science Photo Library

Despite good access to effective antibiotics, Streptococcus pneumoniae (pneumococci) is still a major cause of disease and death in both developing and developed countries.

Japanese encephalitis virus (Flavivirus). Credit: Sanofi Pasteur

Japanese encephalitis is a viral disease present in Asia, from Japan to India and Pakistan.

Measles virus particles, TEM. © Science Photo Library

Measles is a highly contagious viral disease that can be contracted at any age, and that can spread widely.

Meningitis bacteria, SEM. © Science Photo Library

Meningococcal disease is caused by Neisseria meningitidis, a bacterium with human carriers as the only reservoir. It is carried in the nose, where it can remain for long periods without producing symptoms.

Mumps virus. © Science Photo Library

Mumps is an acute illness caused by the mumps virus. It is characterised by fever and swelling of one or more salivary glands (mumps is the only cause of epidemic infectious parotitis).

Bordetella pertussis bacteria in trachea. © Science Photo Library

Pertussis, also known as whooping cough, is a highly contagious acute respiratory infection, caused by the bacterium Bordetella pertussis. The disease is characterised by a severe cough, which can last two months or even longer.

Poliovirus particles, TEM. © Science Photo Library

Poliomyelitis, also known as polio or infantile paralysis, is a vaccine-preventable systemic viral infection affecting the motor neurons of the central nervous system (CNS). Historically, it has been a major cause of mortality, acute paralysis and lifelong disabilities but large scale immunisation programmes have eliminated polio from most areas of the world.

TEM of rabies virus. © Science Photo Library

Rabies is a disease caused by rabies virus (a Lyssavirus). Every year, a small number of cases of rabies is reported in Europe - travel-related or autochthonous.

Rotavirus. Credit: CDC/ Jessica A. Allen

Rotavirus infection is an acute infectious disease mainly affecting children. The main symptoms are fever, vomiting and diarrhoea and many affected children suffer from extensive fluid loss in need of medical attention. The incubation period is 1-2 days.

TEM of Rubella viruses. © Science Photo Library

Rubella is a mild febrile rash illness caused by rubella virus. It is transmitted from person to person via droplets (the virus is present in throat secretions). It affects mainly, but not only, children and when pregnant women are infected, it may result in malformation of the foetus. Humans are the only reservoir of infection.

Flu viruses in the throat, artwork. © Science Photo Library

Seasonal influenza is a preventable infectious disease with mostly respiratory symptoms. It is caused by influenza virus and is easily transmitted, predominantly via the droplet and contact routes and by indirect spread from respiratory secretions on hands etc.

Smallpox viruses. © Science Photo Library

Smallpox was a systemic disease, officially eradicated since 1979 (WHO), caused by infection with the Variola major virus, whose only reservoir was infected humans.

Clostridium tetani bacterium. © Science Photo Library

Tetanus is an often fatal disease, which is present worldwide. It is a consequence of a toxin produced by the bacterium Clostridium tetani. The main reservoirs of the bacterium are herbivores, which harbour the bacteria in their bowels (with no consequences for them) and disseminate the “spore form” of the bacteria in the environment with their faeces.

Macrophage engulfing TB bacteria, SEM. © Science Photo Library

Tuberculosis (TB) is a serious infectious disease that can be fatal. It most commonly affects the lungs.

Typhoid nodules, light micrograph. © Science Photo Library

Typhoid and paratyphoid fevers are systemic diseases caused by the bacteria Salmonella typhi and Salmonella paratyphi, respectively.

Varicella-zoster virus. Credit: NIAID

Varicella (chickenpox) is caused by the varicella-zoster virus (VZV), which also causes shingles. The virus spreads through the body into the skin causing rashes to appear.

Yellow fever virus particles, TEM. © Science Photo Library

Yellow fever (YF) cause a wide spectrum of symptoms, from mild to fatal. In severe cases there may be spontaneous haemorrhage. Mortality of these clinical cases can be as high as 80%, on a par with Ebola, Marburg and other haemorrhagic viral infections.