Bali and Zika: what the current travel notice means

What happened

There is a Zika travel health notice in place for Bali, and it is worth knowing about if you have a trip booked. The US Centers for Disease Control and Prevention issued a Level 2 notice for Bali, Indonesia, on 7 August 2026. Level 2 means 'practise enhanced precautions'. It is the middle of the CDC's four levels, and it is a long way from telling people not to go. The reason given is straightforward: cases of Zika are being reported in travellers returning from Bali. The US Embassy in Jakarta issued its own health alert on 10 August 2026. Indonesian authorities have pushed back on the framing. The Jakarta Post reported on 27 August 2026 that Bali officials played down the concerns following the US warning, and the notice has been the subject of some disagreement about how serious the situation is. The notice remains in place. For most travellers, the CDC's advice is about avoiding mosquito bites and about preventing sexual transmission during and after the trip. For one group, the advice is much firmer: the CDC says that if you are pregnant you should avoid travel to Bali, and if travel is unavoidable you should follow the prevention advice strictly.

Why this matters

Zika is unusual among travel infections, because for most people who catch it, it is mild or causes no symptoms at all. That sounds reassuring, and for most travellers it is. If you do get symptoms they are typically a mild fever, a rash, a headache, aching joints and muscles, and red eyes, usually lasting a few days. The reason Zika is taken so seriously is entirely about pregnancy. If a pregnant woman is infected, the virus can pass to her baby, and it can cause serious birth defects affecting the brain and the skull. That risk is why public health advice around Zika is far stricter than the illness itself would suggest. The other unusual feature is how it spreads. Zika is spread mainly by mosquito bites, but it can also be passed on through sex. That means the risk does not stop when the flight lands. A traveller who was infected without ever feeling unwell can pass the virus to a partner weeks later. That is the reason for the advice about delaying pregnancy after travel. It is not about the traveller's own health. It is about the timing of a pregnancy that might follow. Bali is one of the most popular long-haul destinations for British travellers, and a lot of those trips are honeymoons and couples' holidays. That overlap is precisely why this notice is worth reading rather than skimming.

What the evidence actually says

A sense of proportion helps here. A Level 2 notice is a request to take extra care, not a warning to stay away. The CDC issues Level 2 notices for many destinations at any given time, and holidays continue perfectly normally in all of them. The evidence behind this particular notice is cases detected in returning travellers, which is a standard and reasonable trigger. It is not the same as a large confirmed outbreak with published case counts, and Indonesian officials have questioned how significant the situation is. Both of those things can be true at once: a real signal worth acting on, and a level of risk that does not justify cancelling a trip. It is also worth noting that UK travel health advice and US travel health advice do not always match exactly. They use different thresholds and update on different schedules. If you want the UK view, the National Travel Health Network and Centre publishes country-by-country advice at travelhealthpro.org.uk, and it is worth checking close to your departure date. One thing that is not in doubt: there is no vaccine for Zika, and no specific treatment. Prevention is the only tool. That is why the advice focuses so heavily on bites and on sexual transmission rather than on anything you can take beforehand.

Qurexa perspective

Most people think about travel medicine as vaccinations, and then stop. For a destination like Bali, the more important preparation is often the unglamorous part: repellent, a plan for your regular medicines, and knowing what to do if you feel unwell. If you take medicines regularly, a long-haul trip needs a little forward planning. Order your repeat prescription in good time rather than in the last week, because that is when things go wrong. Carry your medicines in your hand luggage in their original packaging with the pharmacy label on. Take a copy of your repeat prescription list. If you are travelling across time zones and take something at a fixed time, such as insulin, a contraceptive pill or a medicine for a heart condition, ask a pharmacist how to adjust the timing before you go. It is a two-minute conversation that avoids a genuinely difficult problem at 30,000 feet. And if you are pregnant or planning to be, speak to a GP or midwife well before booking, not after. That is the conversation that actually changes decisions.

Practical advice

**If you are pregnant**, the CDC advises avoiding travel to Bali. If you cannot avoid it, follow bite prevention advice strictly and speak to your midwife or GP before you go. **If you are planning a pregnancy**, get advice on how long to wait after travelling before trying to conceive. The recommended waiting times are different for men and women, because the virus persists for different lengths of time. Ask a healthcare professional rather than guessing. **Prevent bites, day and night.** The mosquitoes that carry Zika bite during the day as well as in the evening, which catches many people out. Use an effective repellent on exposed skin, reapply as often as the packaging says, cover up with loose long sleeves and trousers where you can, and use air conditioning or a bed net. **Repellent and children.** DEET at a strength of around 20 to 30 per cent is effective and is considered safe for children of any age when used as directed. Apply it to your own hands first, then to the child, avoiding their eyes, mouth and hands. **Use condoms during and after the trip.** This is the part most people skip. Because Zika can be passed on sexually, and because most infected people have no symptoms, condoms for a period after returning are part of the advice, not an optional extra. **Watch for symptoms for up to two weeks after you get home.** Fever, rash, headache, joint or muscle pain, or red eyes. See a doctor and tell them where you have travelled. That last detail is the one that leads to the right test. **Sort out travel insurance with medical cover.** The CDC specifically recommends insurance including medical evacuation cover for this destination. Check your policy actually includes it. **Check UK advice before you fly.** Look at travelhealthpro.org.uk for the destination, and check the FCDO travel advice page for Indonesia. Both are free and both are updated as things change.

What to know

A CDC Level 2 travel health notice, meaning practise enhanced precautions, has been in place for Bali since 7 August 2026, after Zika cases were reported in returning travellers. The US Embassy in Jakarta issued its own alert on 10 August. Bali officials have played down the level of concern. For most travellers Zika is mild or causes no symptoms. The serious risk is in pregnancy, where infection can cause birth defects. The CDC advises pregnant travellers to avoid Bali, and advises those planning a pregnancy to delay conception after travel. Zika spreads through daytime mosquito bites and through sex. There is no vaccine and no specific treatment, so bite prevention and condom use are the practical protections. A Level 2 notice is not a warning against travel. It is a request to prepare properly. Sources: US Centers for Disease Control and Prevention, 'Zika in Indonesia - Level 2 - Practice Enhanced Precautions', updated 7 August 2026, https://wwwnc.cdc.gov/travel/notices/level2/zika-indonesia | US Embassy Jakarta, 'Health Alert', 10 August 2026, https://id.usembassy.gov/health-alert-u-s-embassy-jakarta-august-10-2026/ | The Jakarta Post, 'Bali plays down Zika concerns after US issues travel health warning', 27 August 2026, https://www.thejakartapost.com/indonesia/2026/08/27/bali-plays-down-zika-concerns-after-us-issues-travel-health-warning | National Travel Health Network and Centre, https://travelhealthpro.org.uk/ This article is for general information and does not replace advice from a doctor, pharmacist or other qualified healthcare professional.