Regulators do not tell pregnant women to avoid insect repellent. The CDC, ANSES and the BfR all consider EPA and BPR registered repellents (DEET, picaridin, IR3535) acceptable in pregnancy when used as directed. But most expectant parents would rather not put anything on the skin at all, and the mosquito-borne infections that matter in pregnancy, above all Zika, are exactly the ones worth preventing. A physical barrier resolves both pressures at once: full protection, with zero chemicals on skin or in the air.
Last updated 2026-07-20
Across France, Italy, Germany, Austria and Switzerland, the Asian tiger mosquito (Aedes albopictus) has stopped being a Mediterranean curiosity and settled into suburban gardens, terraces and the rooms that open onto them. ECDC maps track it moving north year on year, and Sante publique France reports it established in 81 of 96 mainland departments as of the start of 2025. For an expectant mother, that changes a simple summer nuisance into a question worth getting right: what protection is both effective and comfortable to live with for nine months.
The honest starting point is that this is not a question of danger from repellent. It is a question of preference, layered on top of a real reason to avoid the bite in the first place. Those are two separate things, and most of the confusing advice online blurs them. This piece keeps them apart.
If you are short on time, read the five points below. For what the regulators actually say about repellents in pregnancy, see the section on the label. For why the infection itself is the thing to prevent, read the section on Zika and the other arboviruses. For the practical setup, the physical-barrier section is the long version.
Five things worth knowing in pregnancy
- Repellent is not banned in pregnancy. The CDC states plainly that EPA-registered repellents are safe for pregnant and breastfeeding women when used as directed, and European bodies (ANSES in France, the BfR in Germany) reach the same conclusion for DEET, picaridin (icaridin) and IR3535 within their labelled conditions. Anyone telling you repellent is unsafe for the baby is overstating the evidence.
- Even so, most expectant parents prefer zero chemicals on the skin. That preference is legitimate and it is now the mainstream position, not a fringe one. The point of this article is that you do not have to choose between your preference and being protected.
- The bite is the risk worth preventing, not the repellent. The mosquito-borne infections that matter most in pregnancy, Zika above all, are precisely the ones a pregnant woman should avoid. "I would rather use nothing" must never become "I will do nothing".
- A physical barrier gives full protection with zero chemicals. An untreated net or canopy over the bed, and screens on the windows and doors, put a mesh between you and the mosquito. Nothing touches the skin, nothing goes into the air. This is the one measure that satisfies the preference and the protection at the same time.
- Protection is a system, not a single product. The barrier over the bed, the screens on the openings, and the removal of standing water around the home each do part of the work. A canopy alone, over a house full of breeding sites, is half a solution.
What the label and the regulators actually say
It is worth being precise here, because pregnancy is exactly the situation where fear fills the gap left by vague advice.
The active substances used in modern repellents are regulated in the European Union under the Biocidal Products Regulation, Regulation (EU) 528/2012. For skin-applied repellents, the substances in routine use are DEET, picaridin (also called icaridin), IR3535 and PMD (the refined component of oil of lemon eucalyptus). None of these is prohibited in pregnancy by the bodies that assess them.
The CDC's position is the clearest: EPA-registered insect repellents, including those containing DEET, are considered safe for pregnant and breastfeeding women when used according to the label. ANSES, the French food, environmental and occupational health agency, publishes guidance on which products to use and reaches a compatible conclusion, while noting concentration and frequency limits. The BfR in Germany, in its consumer FAQ on repellents, likewise does not exclude pregnant women from the products it discusses. The consistent thread is "as directed": use the labelled concentration, apply it to exposed skin rather than under clothing, and wash it off once you are indoors and no longer exposed.
So the choice a pregnant woman faces is not "safe versus unsafe". It is "an accepted chemical measure I would rather not apply to my skin every day for months, versus a physical measure that achieves the same protection with nothing on the skin at all". Framed that way, the appeal of the barrier is obvious, and it does not depend on scaring anyone about the alternative.
Why the infection is the thing to prevent
The reason to take mosquito protection seriously in pregnancy is not the itch. It is the small number of infections that carry a specific risk to a pregnancy, and the fact that Aedes albopictus, now established across southern and central Europe, is a competent vector for the most important of them.
Zika is the one that reshaped how public health thinks about mosquitoes and pregnancy. The World Health Organization documents that Zika virus infection during pregnancy can cause congenital Zika syndrome, including microcephaly and other severe brain and developmental abnormalities, and that the virus transmits not only through the bite of an infected Aedes mosquito but also sexually and from mother to child. WHO's prevention advice for pregnant women in areas with transmission centres on avoiding bites. Europe is not a high-transmission region, but local, mosquito-borne Zika cases have been recorded in southern France in recent years, and the vector is present, so the risk is low rather than absent.
Dengue and chikungunya are the arboviruses now producing locally acquired European cases every summer. Sante publique France recorded 809 locally acquired chikungunya cases and 30 locally acquired dengue cases in mainland France in 2025, the highest local season on record for the country, and Italy's national surveillance through EpiCentro tracks recurring local clusters. Dengue in pregnancy is associated with a higher risk of complications for both mother and baby, which is reason enough to avoid the bite; chikungunya is rarely fatal but can be genuinely disabling, and infection around the time of birth can be passed to the newborn.
West Nile virus, spread by Culex mosquitoes rather than Aedes, circulates in northern Italy and parts of central and eastern Europe each year. It is a separate transmission cycle, but the practical protection, a barrier at night and screens on the openings, is the same.
None of this is a reason for alarm. It is a reason not to skip protection on the grounds that you would rather not use a spray. The barrier lets you protect the pregnancy without the spray.
The physical barrier, in detail
A physical barrier means an untreated mesh between the mosquito and the skin: zero chemicals, a pure physical barrier, nothing on the mesh. For pregnancy this is the whole point, and it splits into three parts.
The bed. The single most valuable piece of protection is an untreated net or canopy over the bed, because the Aedes biting pattern is heaviest around dawn and dusk and the Culex pattern runs through the night, and a full night of sleep is where the most unprotected hours accumulate. The net must be untreated (no insecticide of any kind on the mesh), breathable, and fully closed. The mesh size matters less than the discipline of tucking it in and closing the opening every single time. A canopy that hangs open on one side is a decoration, not a barrier. Buying the untreated version now also carries forward: a physical, zero-chemical net is exactly what the paediatric bodies recommend for the newborn once the baby arrives, so it is a purchase that outlives the pregnancy.
The openings. Fitted screens on windows and doors turn the whole bedroom, and ideally the whole home, into a protected space, which is more comfortable than living inside a canopy during waking hours. Fine-mesh window screens and a door screen let a pregnant woman keep the house ventilated through a hot summer without a nightly trade-off between heat and bites. This matters more in pregnancy than at other times, because sleep and thermal comfort are already harder.
The outdoor hours. A terrace or garden net over a seating or dining area extends the same zero-chemical logic to the evening outdoors, which is when families actually get bitten. For short, active exposure, gardening or hanging washing at dusk, loose long sleeves, full-length trousers and an untreated head net cover the skin without anything applied to it. The principle throughout is the same: cover or screen the skin rather than treat it.
Every one of these is a pure physical barrier. There is nothing on the mesh, so there is nothing to absorb, inhale, wash off, or worry about, which is exactly why it answers the pregnancy preference so cleanly.
Source reduction: the half people skip
A barrier keeps mosquitoes off the person. Source reduction keeps the mosquito population down in the first place, and Aedes albopictus breeds in astonishingly small volumes of standing water, close to the house.
Once a week, empty and scrub anything that holds water: plant saucers, buckets, watering cans, blocked gutters, the tray under an air-conditioning unit, children's toys left in the garden, the fold of an unused parasol base. A bottle cap of water is enough for larvae. Because the tiger mosquito rarely flies far, most of the mosquitoes biting on a terrace were bred within a short distance of it, which means source reduction around your own home has a direct and quick payoff. It is also the one measure with no cost and no product attached, and it protects the whole household, not only the person under the net.
Common mistakes in pregnancy
- Treating "I would rather not use repellent" as "I will do nothing". This is the mistake that matters, because it leaves the pregnancy unprotected against the infections that are the actual reason to care. The barrier exists precisely so that the preference and the protection do not conflict.
- Believing repellent is dangerous to the baby. It is not, according to the CDC, ANSES and the BfR, within labelled use. If circumstances leave you without a barrier, a labelled repellent is a reasonable protective step, not a risk to agonise over.
- Leaving the net open. An untreated canopy only works closed and tucked. The commonest failure is a beautifully hung net with a gap at the foot of the bed.
- Reaching for an insecticide-treated net "to be safe". Treated nets are a separate regulatory class built for malaria-endemic settings; they are not the zero-chemical choice, and they are not what the preference-driven shopper is looking for. For a pregnant woman who wants nothing on the mesh, the untreated net is the correct product, and the treated one is the wrong one.
- Screening the bedroom but ignoring the terrace and the water. The evening outdoors and the standing water around the home are where the exposure and the breeding actually happen. A perfect bedroom in a mosquito-friendly garden only shifts the problem.
The European picture going into the 2026 season
The direction of travel is settled. Aedes albopictus is established across the French Mediterranean and Atlantic coasts and up the Rhone corridor, throughout much of Italy, and in pockets of the DACH countries where it continues to expand. The 2025 season was France's largest for locally acquired chikungunya and dengue on record, and the season now stretches across much of the year in the south. West Nile virus continues its annual circulation in the Po Valley and beyond.
For a pregnancy that spans a European summer, this is not a reason for anxiety, but it is a reason to set up protection deliberately rather than improvising in August. The good news is that the most protective single measure, an untreated net over the bed, is also the one that best fits the zero-chemical preference and the one that will still be needed when the baby arrives.
The pregnancy routine, in short
- Put an untreated, breathable net or canopy over the bed, and close it fully every night.
- Fit fine-mesh screens on the bedroom windows and doors, and ideally across the home, so you can ventilate without biting.
- Extend the same untreated barrier to the terrace or garden seating for the evening hours, and cover the skin with loose long clothing and a head net for short outdoor tasks at dusk.
- Empty and scrub every water-holding container around the home once a week.
- Keep a labelled repellent as a backup for unscreened situations, in the knowledge that regulators consider it acceptable in pregnancy, while the barrier remains your everyday, zero-chemical default.
The physical barrier is not a compromise between protection and preference. In pregnancy it is the measure that best satisfies both.
Sources
- CDC Yellow Book 2026, Mosquitoes, Ticks and Other Arthropods (EPA-registered repellents safe in pregnancy when used as directed).
- World Health Organization, Zika virus fact sheet (transmission, congenital Zika syndrome, prevention in pregnancy).
- ECDC, Aedes albopictus factsheet and invasive mosquito maps (vector competence and European distribution).
- ANSES, mosquito repellents guidance (products, concentrations, mechanical protection).
- Bundesinstitut fuer Risikobewertung (BfR), repellents health-risk FAQ.
- Sante publique France, chikungunya, dengue and Zika 2025 report and enhanced surveillance data, mainland France.
- EpiCentro (Istituto Superiore di Sanita), national arbovirus surveillance bulletins, Italy.
- Regulation (EU) 528/2012, the Biocidal Products Regulation.