Chickenpox can still matter before a trip
Most people think of chickenpox as a childhood nuisance. For an adult who has never had it, or is not sure, it can be a badly timed and sometimes serious infection. Northamptonshire Clinic can assess whether the varicella, or chickenpox, vaccine makes sense before travel, work abroad, family visits or close contact with someone whose immune system is weak.
A very contagious virus, not just a spotty rash
Chickenpox is caused by the varicella zoster virus. It spreads easily through contact with fluid from chickenpox blisters, tiny airborne droplets from the blisters, and sometimes through coughing or sneezing. A person can pass it on from around 24 hours before the rash appears until all spots have dried and crusted, which is usually about 5 days after the spots start.
The rash often begins on the face or scalp, then spreads. Some people only get a few spots. Others get hundreds, with fever, loss of appetite and feeling generally rotten. Symptoms usually appear 10 to 21 days after contact.
Children often recover within 1 to 2 weeks. Adults can be hit harder. Complications such as pneumonia, bacterial skin infection and, rarely, brain inflammation can occur. Travel adds another practical problem: airlines may refuse boarding if you still have an active rash, and you may need medical confirmation that you are no longer infectious.
Two doses, usually at least four weeks apart
The chickenpox vaccine is used to protect people who have not already had chickenpox or been vaccinated against it. In the UK, varicella-containing vaccines are part of the childhood programme, and separate varicella vaccines may also be used for susceptible adults or children when clinically appropriate.
For people who need it, the usual course is two doses, with at least 4 weeks between them. It is given as an injection. If you are travelling soon, book early enough to fit in both doses where possible, especially if you are also having other live travel vaccines such as yellow fever or MMR-containing vaccines. The timing can matter.
This is a live vaccine, so it is not suitable for everyone. Pregnancy, significant immune suppression, some medical treatments and certain allergies need careful checking before vaccination. Common after-effects can include a sore arm, mild fever or a small rash. No vaccine gives perfect protection, but vaccination can reduce the chance of chickenpox and may make breakthrough illness milder.
Travel rarely makes it automatic
Chickenpox occurs worldwide, so the vaccine is not normally recommended simply because a country appears on your itinerary. The question is usually whether you are susceptible and likely to be exposed.
It may be more relevant for longer stays, work placements, healthcare or childcare roles, studying abroad, visiting family, or sharing accommodation with local households. Adults travelling to countries such as India, Bangladesh, Kenya or parts of South America may want to check their history if they never had chickenpox as a child. Business travellers can also run into problems: a conference, office visit or training trip is still close indoor contact if someone is infectious.
