Zika & Fertility in Colombia: 2026 Guidance for IVF Patients

Zika is probably the most common concern American patients raise when considering fertility treatment in Colombia — and understandably so. The 2015–2016 Zika epidemic was alarming, and the association between Zika infection during pregnancy and microcephaly made global headlines. But the epidemiological picture in 2026 is very different from 2016, and understanding the current risk — rather than the decade-old headlines — is essential for making an informed decision about IVF in Colombia.

The 2015–2016 Epidemic & Current Status

Colombia experienced a major Zika outbreak in 2015–2016, with an estimated 100,000+ cases. The epidemic prompted the Colombian Ministry of Health to recommend delaying pregnancy and triggered widespread international concern about travel to affected countries. The association between Zika and congenital Zika syndrome (which includes microcephaly) was confirmed during this period.

Since the 2015–2016 epidemic, Zika transmission in Colombia — and throughout Latin America — has declined dramatically. Population immunity from the initial epidemic, combined with reduced vector competence (the mosquito population's ability to transmit the virus after widespread exposure), has resulted in very low reported case numbers. Colombia has not experienced a resurgence anywhere close to the 2015–2016 levels.

Current Risk for Fertility Patients

The current Zika risk for fertility patients in Colombia in 2026 is low — but not zero. Aedes aegypti mosquitoes (the same species that transmits dengue, chikungunya, and yellow fever) remain endemic in Colombia's tropical and subtropical regions, and low-level Zika circulation continues. The risk is substantially lower than during the 2015–2016 epidemic, but the consequences of Zika infection during pregnancy remain serious.

For IVF patients specifically, the relevant risk windows are during embryo transfer and early pregnancy (when the embryo is implanting and organogenesis begins) and during pregnancy if you become pregnant and remain in or return to Colombia. The stimulation and retrieval phase carries no Zika-specific risk beyond the general infection risk — there's no evidence that Zika affects egg quality or retrieval outcomes.

What the CDC Says

CDC guidance has evolved significantly since the 2016 travel advisories. As of 2026, the CDC does not maintain active Zika travel warnings for most countries that experienced the 2015–2016 epidemic — reflecting the dramatically reduced transmission levels. However, CDC guidance continues to advise travelers to areas with risk of Zika to take steps to prevent mosquito bites, and advises pregnant women to discuss travel plans with their healthcare provider.

Previous CDC guidance recommending waiting periods after Zika exposure before attempting conception (3 months for men, 2 months for women) was based on the known duration of Zika virus in semen and blood. These recommendations remain relevant if you experience Zika-like symptoms (fever, rash, joint pain, conjunctivitis) or test positive for Zika during your time in Colombia.

Practical Precautions

Standard mosquito-bite prevention measures significantly reduce Zika risk:

• Use EPA-registered insect repellent containing DEET (20–30%), picaridin, IR3535, or oil of lemon eucalyptus — these are safe during pregnancy and IVF treatment
• Stay in accommodations with screens or air conditioning — Aedes aegypti mosquitoes are primarily indoor biters
• Medellín's advantage: At 5,000 feet (1,500m) elevation, Medellín has significantly lower Aedes aegypti populations than coastal or lowland cities. The mosquito thrives in warm, low-altitude environments — Medellín's cooler climate reduces (but doesn't eliminate) the vector population
• Wear long sleeves and pants when outdoors during dawn and dusk (peak mosquito activity hours)
• Eliminate standing water near your accommodation (flower vases, plant saucers)

Bogotá, at 8,600 feet (2,600m), has even lower Aedes aegypti risk due to altitude. Cali, at lower elevation and warmer temperature, has higher mosquito density.

What Colombian Clinics Recommend

Colombian fertility clinics are well-versed in the Zika conversation — they've been addressing it with international patients since 2016. Most clinics recommend standard mosquito-bite prevention measures (as outlined above), Zika screening (blood test) if you develop symptoms consistent with Zika during your stay, and a post-travel waiting period before embryo transfer only if there's a confirmed or suspected Zika exposure — not as a routine measure for all patients.

For freeze-all IVF cycles (where you retrieve eggs and freeze embryos during your trip, then return later for transfer), the Zika question is less acute — your embryos are safely frozen, and you can schedule your transfer trip after any relevant waiting period if you have a suspected exposure.

Explore Our Colombia Medical Network