Hepatitis B

Hepatitis B is a viral infection caused by the Hepatitis B virus (HBV) that primarily targets the liver. Unlike Hepatitis A, it is not spread through contaminated food or water, but through contact with infected blood, sexual fluids, or other bodily fluids. Travellers can be exposed through unprotected sexual contact, medical or dental procedures carried out with inadequately sterilised equipment, tattooing or body piercing in non-sterile environments, needle sharing, or through accidental injury such as a road traffic accident requiring emergency treatment abroad. The virus is found worldwide but is particularly prevalent in sub-Saharan Africa, East and Southeast Asia, the Pacific Islands, parts of South America, and Eastern Europe. It is estimated that around 296 million people worldwide are living with chronic Hepatitis B infection, making it one of the most significant infectious disease challenges globally. Travellers on longer trips, those working in healthcare settings, and those with potential exposure through lifestyle or activities face a higher risk of infection.

Symptoms

Many people infected with Hepatitis B experience no symptoms at all during the initial acute phase, which makes the infection easy to miss and inadvertently pass on to others. When symptoms do occur, they typically appear one to four months after exposure and may include fatigue, loss of appetite, nausea, vomiting, abdominal pain, dark urine, pale stools, and jaundice, where the skin and whites of the eyes turn yellow. Most healthy adults will clear the infection naturally within a few months. However, in some cases, particularly in those infected in infancy or early childhood, the infection can become chronic, persisting for years and significantly increasing the risk of developing serious liver disease, including cirrhosis and liver cancer. Chronic Hepatitis B affects approximately 5 to 10 percent of adults who are infected, and while effective treatments exist to manage the condition, there is currently no cure. This makes prevention through vaccination all the more important.

Vaccination

The Hepatitis B vaccine is safe, highly effective, and provides long-lasting protection against the virus. The standard course consists of three doses given over a period of six months, though an accelerated schedule of three doses over three weeks followed by a booster at twelve months is available for those with limited time before travel. A rapid schedule delivering all three doses within three weeks is also an option for those travelling at very short notice, though a booster will be needed at a later date to maintain long-term protection. For travellers who also require protection against Hepatitis A, a combined Hepatitis A and B vaccine is available, reducing the number of injections needed. The Hepatitis B vaccine is recommended for travellers visiting high-prevalence regions, those who may require medical care abroad, people with occupational exposure risks, and anyone whose lifestyle or planned activities may put them at greater risk. At Market Harborough Travel Clinic, we will review your travel plans and personal circumstances to recommend the most suitable vaccination schedule ahead of your trip.

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