Tonga (Australasia)Advice for All Destinations Vaccinations Malaria Other Health Risks Alerts News
Advice for All Destinations
Read the information on the COVID-19: Health Considerations for Travel page for advice on travelling during the COVID-19 pandemic.
Vaccinations and malaria risk
Review both the Vaccination and Malaria sections on this page to find out if you may need vaccines and/or a malaria risk assessment before you travel to this country.
If you think you require vaccines and/or malaria risk assessment, you should make an appointment with a travel health professional:
A travel health risk assessment is also advisable for some people, even when vaccines or malaria tablets are not required.
Risk prevention advice
Many of the health risks experienced by travellers cannot be prevented by vaccines and other measures need to be taken.
Always make sure you understand the wider risks at your destination and take precautions, including:
- food and water safety
- accident prevention
- sun safety
- avoiding insect bites
- preventing and treating animal bites
- respiratory hygiene
- hand hygiene
Our advice section gives detailed information on minimising specific health risks abroad:
Other health considerations
Make sure you have travel insurance before travel to cover healthcare abroad.
Find out if there are any restrictions you need to consider if you are travelling with medicines.
Know how to access healthcare at your destination: see the GOV.UK English speaking doctors and medical facilities: worldwide list
If you feel unwell on your return home from travelling abroad, always seek advice from a healthcare professional and let them know your travel history.
- Confirm primary courses and boosters are up to date as recommended for life in Britain - including for example, seasonal flu vaccine (if indicated), MMR, vaccines required for occupational risk of exposure, lifestyle risks and underlying medical conditions.
- Courses or boosters usually advised: Tetanus.
- Other vaccines to consider: Diphtheria; Hepatitis A; Hepatitis B; Typhoid.
- Selectively advised vaccines - only for those individuals at highest risk: none.
No yellow fever vaccination certificate required for this country.
Notes on the diseases mentioned above
- Diphtheria:  spread person to person through respiratory droplets. Risk is higher if mixing with locals in poor, overcrowded living conditions.
spread through consuming contaminated food and water or person to person through the faecal-oral route.
Risk is higher where personal hygiene and sanitation is poor.
Risk is highest for those with underlying medical conditions where there is increased risk of severe disease e.g. chronic liver/kidney disease; haemophiliacs; men who have sex with men; people who inject drugs.
spread through infected blood and blood products, contaminated needles and medical instruments and sexual intercourse.
Risk is higher for long stays, frequent travel and for children (exposed through cuts and scratches), those who may require medical treatment during travel.
Risk is highest for those with underlying medical conditions where there is increased risk of severe disease e.g. chronic liver/kidney disease; haemophiliacs; men who have sex with men; people who change partners frequently; people who inject drugs.
- Tetanus:  spread through contamination of cuts, burns and wounds with tetanus spores. Spores are found in soil worldwide. A total of 5 doses of tetanus vaccine are recommended for life in the UK. Boosters are usually recommended in a country or situation where the correct treatment of an injury may not be readily available.
- Typhoid:  spread mainly through consumption of contaminated food and drink. Risk is higher where access to adequate sanitation and safe water is limited.
- Malaria not normally present unless the illness was contracted abroad.
Other Health Risks
Dengue FeverA viral illness that is transmitted to humans by mosquito bites. The mosquito that spreads dengue bites during the day and is more common in urban areas. Symptoms include fever, headache, severe joint, bone and muscular pain - hence its other name 'breakbone fever'. There is no vaccine and prevention is through avoidance of mosquito bites. For further information see Dengue Fever.
There is a risk of exposure to coronavirus (COVID-19) in this country.
Please be aware that the risk of COVID-19 in this country may change at short notice and also consider your risk of exposure in any transit countries and from travelling itself.
- The 'News' section on this page will advise if significant case increases or outbreaks have occurred in this country.
Prior to travel, you should:
- Check the latest government guidance on the FCDO Foreign travel advice and country specific pages for travel to this country and the rules for entering the UK on return.
- Ensure you are up to date with UK recommendations on COVID-19 vaccination.
- Check if you are at increased risk of severe COVID-19.
- You can check this in the FAQ's.
- If you are at increased risk of severe COVID-19 you should carefully consider your travel plans and consider seeking medical advice prior to making any decisions.
For further information, see Coronavirus disease (COVID-19) and COVID-19: Health Considerations for Travel pages.
Zika Virus Infection
This country has been categorised as having a risk of Zika (ZIKV) virus transmission.
ZIKV is mainly spread through mosquito bites. The mosquito responsible most commonly bites during daylight hours and is common in towns and cities. There is a low risk of sexual transmission.
The illness is usually mild but infection during pregnancy may lead to babies being born with birth defects. There is no vaccine currently available against ZIKV.
Advice for All Travellers
You should practice strict mosquito bite avoidance at all times.
Do not travel without adequate travel insurance.
Seek pre-travel health advice from a travel health professional 6 to 8 weeks in advance of travel.
- If you are pregnant, consider postponing non-essential travel to this country.
- If you are planning pregnancy, or there is a possibility you may be pregnant, you should use contraception and condoms during travel and for:
- 2 months afterwards if you are female
- 3 months afterwards if you are male
These measures reduce the chance of sexual transmission of ZIKV and/or the risk of ZIKV infection in pregnancy.
For further information, see Zika virus infection page.