biology

Tick-borne encephalitis vaccine

Tick-borne encephalitis vaccine is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tick-borne encephalitis vaccine rather than just read about it. In short: Tick-borne encephalitis vaccine is a vaccine used to prevent tick-borne encephalitis (TBE). The disease is most common in Central and Eastern Europe, and Northern Asia.

Key takeaways

Tick-borne encephalitis vaccine belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tick-borne encephalitis vaccine to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tick-borne encephalitis vaccine from memory before moving on to harder problems.

Reference excerpt

Tick-borne encephalitis vaccine is a vaccine used to prevent tick-borne encephalitis (TBE). The disease is most common in Central and Eastern Europe, and Northern Asia. More than 87% of people who receive the vaccine develop immunity. It is not useful following the bite of an infected tick. It is given by injection into a muscle. The World Health Organization (WHO) recommends immunizing all people in areas where the disease is common. Otherwise the vaccine is just recommended for those who are at high risk. Three doses are recommended followed by additional doses every three to five years. The vaccines can be used in people more than one or three years of age depending on the formulation. The vaccine appears to be safe during pregnancy. Serious side effects are very uncommon. Minor side effects may include fever, and redness and pain at the site of injection. Older formulations were more commonly associated with side effects. The first vaccine against TBE was developed in 1937. It is on the World Health Organization's List of Essential Medicines. The vaccine was approved for medical use in the United States in August 2021.

Medical uses In the United States, the tick-borne encephalitis vaccine is indicated for active immunization to prevent tick-borne encephalitis (TBE) in individuals one year and older. The efficacy of these vaccines has been well documented. They have also been shown to protect mice from a lethal challenge with several TBE-virus isolates obtained over more than 30 years from all over Europe and the Asian part of the former Soviet Union. In addition, it has been demonstrated that antibodies induced by vaccination of human volunteers neutralized all tested isolates.

Pregnancy and breastfeeding The vaccine appears to be safe during pregnancy, but because of insufficient data the vaccine is only recommended during pregnancy and breastfeeding when it is considered urgent to achieve protection against TBE infection and after careful consideration of risks versus benefits.

Schedule Two to three doses are recommended depending on the formulation. Typically one to three months should occur between the first doses followed by five to twelve months before the final dose. Additional doses are then recommended every three to five years. A study from 2006 suggests that the FSME-Immun/Ticovac and Encepur are interchangeable for booster vaccination, but cautions against change during the primary immunization course.

History The first vaccine against TBE was developed in the late 1930s in the Soviet Union, based on the Sofyin strain of the TBE virus. The vaccine was prepared from an infected mouse brain suspension, inactivated with formalin. Initial trials were conducted on forced Gulag laborers before research was replicated in other countries. As there were frequent reports of negative side effects towards the mouse brain components of the vaccine, scientists across countries worked on developing new vaccines. The Institute of Poliomyelitis and Viral Encephalitis developed new TBE vaccines in the late 1950s based on cell cultures from chicken embryos. Later, in 1972, the veterinary microbiologist James Keppie at Porton Down in the United Kingdom led the development of a new TBE vaccine. It was based on the Neudörfl strain of the TBE virus provided by Christian Kunz, an Austrian virologist. Kunz then led human trials in Austria; after these trials were successful, public vaccination campaigns soon began. This vaccine was patented in 1980 in Austria by Immuno AG, which was later purchased by Baxter International.

Society and culture

Economics Per dose it costs between £50 and £70 in the United Kingdom.

Brand names Brand names of the vaccines include Encepur N, FSME-Immun CC and Ticovac, Encevir-Neo, Klesh-E-Vak.

References

External links "Tick-borne Encephalitis Vaccine". World Health Organization (WHO). 12 October 2011. Archived from the original on 15 May 2006.

Illustrations

Worked examples

Example 1 — a first encounter with Tick-borne encephalitis vaccine

Start with the simplest possible case. Write down what Tick-borne encephalitis vaccine claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tick-borne encephalitis vaccine before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tick-borne encephalitis vaccine ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tick-borne encephalitis vaccine

In research: Tick-borne encephalitis vaccine appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Tick-borne encephalitis vaccine in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Tick-borne encephalitis vaccine is common in secondary-school and first-year university syllabi. It links to neighbouring topics Inactivated vaccines, Soviet inventions, Vaccines by disease, so understanding it makes those chapters shorter.
In everyday life: Look for Tick-borne encephalitis vaccine outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Tick-borne encephalitis vaccine in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tick-borne encephalitis vaccine means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tick-borne encephalitis vaccine out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tick-borne encephalitis vaccine in simple terms?

Tick-borne encephalitis vaccine is a vaccine used to prevent tick-borne encephalitis (TBE). The disease is most common in Central and Eastern Europe, and Northern Asia.

Why does Tick-borne encephalitis vaccine matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tick-borne encephalitis vaccine?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tick-borne encephalitis vaccine.